7 Ks Investigations
Joppa, MD 21085, (410) 538-5914A-1 Special Response Corporation
Towson, MD 21204, (410) 494-1900 AAA Protective Agency Inc
Baltimore, MD 21201, (410) 977-1668 Absolute Investigative
Services
Bel Air, MD 21014, (410) 879-5540 Absolute Investigative &
Security
Columbia, MD 21044, (410) 740-5232 A Capitol Process Services
Bethesda, MD 20814, (301) 718-7733 Baystate Lock & Key
Baltimore, MD 21201, (410) 391-7711 Aarrow Security Analysts Inc
Catonsville, MD 21228, (410) 869-8644 Investigative Services
604 E Joppa Rd, Towson, MD 21204, (410) 321-1520 A Approved
Locksmiths
Hagerstown, MD 21740, (301) 791-7039 A Authorized Investigator
111 N Potomac St, Hagerstown, MD 21740, (301) 791-7039 Accelerated
Design & Technology
111 N Potomac St, Hagerstown, MD 21740, (301) 791-7039 A & B
Investigations
Baltimore, MD 21201, (410) 242-6412 Abraham Security Inc
7961 Eastern Ave, Silver Spring, MD 20910, (301) 589-5793 Ada
Investigations Inc
1234 Delmar, Delmar, MD 21875, (410) 896-4178 Accident
Reconstruction Journal
Waldorf, MD 20602, (301) 843-1371 Accu-Line Investigations
Burtonsville, MD 20866, (301) 236-9600 Adt Security Services Inc -
Local Office
2 Metropolitan Ct Ste 8, Gaithersburg, MD 20878, (301) 212-9048
Advanced Information Research
11403 Cronridge Dr Ste 232, Owings Mills, MD 21117, (410) 654-5665 The Agency Inc
8604 2nd Avenue, Silver Springs, MD 20910, (877) 420-1489
Advantage Investigative Service
25 W Chesapeake Ave Ste 202, Towson, MD 21204, (410) 296-4456
Affordable Information Services
Oxon Hill, MD 20745, (301) 630-7837 Affordable Investigative
Services
6714 Trowbridge Pl, Fort Washington, MD 20744, (301) 567-2083
Admiral Security Services
4401 E West Hwy Ste 500, Bethesda, MD 20814, (301) 656-9382
Advance Security
840 W Washington St, Hagerstown, MD 21740, (301) 790-0092 Adt
Security Services Inc
6855 Deerpath Rd, Elkridge, MD 21075, (410) 467-9683 Adt Security
Services Inc
Hyattsville, MD 20781, (301) 853-2723 Affordable Cctv Sales &
Installation Inc
1101 S Conkling St, Baltimore, MD 21224, (410) 732-5330 A H M
Performance
7528 Philadelphia Rd, Rosedale, MD 21237, (410) 866-4747 Airtight
Investigations.com
13012 Estelle Road, Silver Spring, MD 20906, (301) 933-1301 All
County Investigation & Security Agency
8386 Court Ave, Ellicott City, MD 21043, (410) 461-5474 All County
Investigation & Security Agency
77 E Main St, Westminster, MD 21157, (410) 876-9772 All County
Security Agency Inc
Sykesville, MD 21784, (410) 549-7680 Alliance Investigations Inc
6130 Oxon Hill Rd Ste 100, Oxon Hill, MD 20745, (301) 567-5700
Allied Investigating Agency Inc
311 Quilting Way, Bel Air, MD 21015, (410) 515-9900 All-Tech
Investigations & Process Service Inc
Bowie, MD 20715, (301) 249-6844 Allstate Security & Investigative
Services Inc
Silver Spring, MD 20901, (301) 587-8866 Alpha Security Inc
12805 Old Fort Rd Ste 302, Fort Washington, MD 20744, (301) 292-3000 American Express
10480 Little Patuxent Pkwy, Columbia, MD 21044, (410) 992-9428
American Intell
Cumberland, MD 21502, (301) 777-5210 Americas Energy Savers
5119 Harford Rd, Baltimore, MD 21214, (410) 665-0800 Andersen &
Associates
1 N Charles St, Baltimore, MD 21201, (410) 752-3927 Security
America Inc
Baltimore, MD 21229, (410) 525-1889 Amguard Protective Services
20201 Century Blvd, Germantown, MD 20874, (301) 916-8200 Apex
Investigative Services Inc
Kensington, MD 20895, (301) 231-7745 Apex Investigative Services
Inc
Glen Burnie, MD 21061, (410) 590-3700 Mid-Atlantic Investigative
Services
Westminster, MD 21157, (410) 374-8380 Military Entrance Processing
Station
6845 Deer Path Rd, Baltimore, MD 21201, (410) 379-1382 Mirage
Investigative Services
2000 Pembrook Ct, Emmitsburg, MD 21727, (301) 447-2501 Montgomery
Security Services
12073 Tech Rd Ste B, Silver Spring, MD 20906, (301) 384-7777 Msm
Security Services
7337 Hanover Pkwy, Greenbelt, MD 20770, (301) 507-6210 Msm
Security Services Inc
9470 Annapolis Rd Ste 411, Lanham, MD 20706, (301) 429-1980 Nanny
Check
7941 Bennett Branch Rd, Mount Airy, MD 21771, (301) 831-7747
Myhill John E PHD
1410 Forest Dr Ste 34, Annapolis, MD 21403, (410) 280-9785 Murray
Investigations
Easton, MD 21601, (410) 829-0492 Murray Investigations Easton Tel
Easton, MD 21601, (410) 822-2848 National Association of Bunco
Investigators Inc
400 E Pratt St Ste 800, Baltimore, MD 21202, (410) 752-8150
National Background Investigations
Stevensville, MD 21666, (410) 604-6200 Nationwide Investigative
Agency Inc
Burtonsville, MD 20866, (301) 890-8794 Sos Security Inc
Baltimore, MD 21201, (410) 685-0909 Spring Capital Investors Llc
2 E Read St, Baltimore, MD 21202, (410) 685-8000 Sprague
Investigations
Myersville, MD 21773, (301) 293-2236 A-1 Special Response
Corporation
10612 Beaver Dam Rd, Cockeysville, MD 21030, (410) 785-1212
Special Response Corporation
Towson, MD 21204, (410) 494-1900 Statewide Bureau of
Investigations
Baltimore, MD 21201, (410) 687-6609 Sterling Moving & Storage Inc
Laurel, MD 20707, (301) 498-7779 STREET GROUP INCorporated
110 E LEXINGTON ST, Baltimore, MD 21202, (410) 332-0069 ST MORITZ
INVESTIGATIONS
340 W PATRICK ST, Frederick, MD 21701, (301) 662-5624 Sullivan
William C Accident Consultant
Trappe, MD 21673, (410) 476-3046 Superior Protective Services Inc
Baltimore, MD 21201, (410) 358-5911 Superior Training Solutions
Clinton, MD 20735, (301) 877-3100 Szweda Investigative Services
Clarksville, MD 21029, (410) 531-6533 Talon Detective Agency Inc
Hughesville, MD 20637, (301) 274-9225 Target
5700 Bou Ave, Rockville, MD 20852, (301) 945-0018 The Agency Inc
Kensington, MD 20895, (301) 649-4823 Thomas Patient Care Service
540 Riverside Dr., Suite 3, Salisbury, MD 21802, (410) 548-2959
Thomas & Thomas Detective Agency
540 Riverside Dr Ste 3, Salisbury, MD 21801, (410) 548-2959 The
Premier Group
Laurel, MD 20707, (301) 483-6068 Thompson Investigative Agency
8424 Veterans Hwy Ste 3, Millersville, MD 21108, (410) 987-8181
The Travers Organization Inc
22 Foxfire Dr, Port Deposit, MD 21904, (410) 658-7660 Wackenhut
Corp the
6630 Baltimore Natinl Pke, Catonsville, MD 21228, (410) 788-6800 T
& M Investigations
Chestertown, MD 21620, (410) 348-2333 Tolle Investigative Services
Inc
Elkridge, MD 21075, (410) 540-9595 Tontine Group
Baltimore, MD 21201, (410) 659-7171 Top Flight Protective Services
Upper Marlboro, MD 20772, (301) 324-6706 Tri State Security &
Investiga
6910 Leyte Drive, Oxon Hill, MD 20745, (301) 567-5855 Trident
Group Inc
820 Eastern Blvd, Essex, MD 21221, (410) 687-9720 Triton Security
Inc
College Park, MD 20740, (301) 982-0615 Tsr Security Inc
4614 Old Court Rd, Pikesville, MD 21208, (410) 496-7040 Unitech &
Associates
Severna Park, MD 21146, (410) 793-0800 Unified Investigations &
Sciences Inc
Salisbury, MD 21801, (410) 677-0200 US Bureau of Special
Investigations
140 E Main St, Elkton, MD 21921, (410) 392-0310 US Investigation
Services Inc
7467 Ridge Rd Ste 340, Hanover, MD 21076, (410) 694-0701 US
Investigations Services Inc
6525 Belcrest Rd Ste 600, Hyattsville, MD 20782, (301) 887-1054 US
SECURITY
6666 SECURITY BLVD SUITE 4, Baltimore, MD 21207, (410) 277-4682
Vance International Inc
9601 Baltimore Ave, College Park, MD 20740, (301) 588-6600 Vance
Training Center
8455 Colesville Rd, Silver Spring, MD 20910, (301) 588-9654 Vance
Uniformed Protection Services
8455 Colesville Rd Ste 900, Silver Spring, MD 20910, (301) 588-6600 Velez & Associates
Columbia, MD 21044, (410) 997-1755 Verifacts Systems Inc
10749 Folkestone Way, Woodstock, MD 21163, (410) 461-7928 Full
Service Vending
1001 Wilso Dr, Baltimore, MD 21201, (410) 242-6412 Viola Russell
Investigations
Capitol Heights, MD 20743, (301) 423-4110 Wackenhut Security
Services
13024 Pennsylvania Ave, Hagerstown, MD 21742, (301) 733-9000
Wackenhut Security Services
7112 Willow Ave, Takoma Park, MD 20912, (301) 891-1210 Wackenhut
Security Services
Frederick, MD 21701, (301) 695-6146 Wackenhut Nuclear Services
Sykesville, MD 21784, (410) 549-7820 Wackenhut Security Services
Cumberland, MD 21502, (301) 759-4620 WATKINS SECURITY AGENCY INC
2901 DRUID PARK DR STE A106, Baltimore, MD 21215, (410) 523-5080
Waterfront Guard Association-Local 1852
29 S Robinson St, Baltimore, MD 21224, (410) 327-6655 Wee See
Fork, MD 21051, (410) 592-3306 Web Page Writers
1110 Bonifant St, Silver Spring, MD 20910, (301) 587-3111 Wecare
Private Duty Services Inc
1852 Reisterstown Rd, Pikesville, MD 21208, (410) 602-3993 West
River Group the
Annapolis, MD 21401, (301) 261-9366 Widenhouse & Associates
Bel Air, MD 21014, (410) 638-9740 Widenhouse & Associates
Fork, MD 21051, (410) 893-2228 Wizard Investigations
Edgewood, MD 21040, (410) 612-1019 Willowbrook Road Billboards
Cumberland, MD 21502, (301) 724-8900 Woods Security
Fort Washington, MD 20744, (301) 292-7174 World Investigative
Services - Branch Ofc
202 Woodlawn Dr, Forest Hill, MD 21050, (410) 893-2674 World
Investigators Network Inc
Baltimore, MD 21201, (410) 477-8879 Worldwide Security Services
Ltd
Olney, MD 20832, (301) 924-0194 Worlwide Security Services Ltd
4221 Thorncroft Ter, Olney, MD 20832, (301) 774-5750 Yello Dyno
the Solution For Child Protection
Westminster, MD 21157, (410) 751-6433 Covert Camera Systems Inc
Middletown, MD 21769, (301) 371-5575 Wiseguy Private Investigative
Services
1414 Dilston Rd, Silver Spring, MD 20903, (301) 445-6616 G & L
Investigations
Laurel, MD 20707, (301) 776-5569 Chan Detective Agency
8209 Fenton St Ste 7, Silver Spring, MD 20910, (301) 588-0065 US
Security Associates
11377 Robinwood Dr, Hagerstown, MD 21742, (301) 790-0092 Invesco
1806 S Main St, Mount Airy, MD 21771, (410) 795-3952 Direct Inc
Baltimore, MD 21201, (410) 547-8900 Elite People Protective
Services Inc
Po Box 22485, Baltimore, MD 21203, (410) 523-8820 Selective
Security
207 Transmission Ct, Linthicum Heights, MD 21090, (410) 691-1288
Investigative Cnsltng Grp
6401 Golden Triangle Dr, Greenbelt, MD 20770, (301) 220-3230
Insight Investigations Inc
Arnold, MD 21012, (410) 384-9450 Coastal Investigations
West River, MD 20778, (410) 867-9410 Armor Protection Services
Laurel, MD 20707, (301) 490-9089 Gts Global Security Services Llc
201 Forbes St, Annapolis, MD 21401, (443) 482-3990 Adt Security
Services
605 Ritchie Hwy, Severna Park, MD 21146, (410) 647-5800 Maryland
Investigators and Security Assoc
1327 Knopp Rd, Jarrettsville, MD 21084, (410) 692-2878 Hall
Investigations
Bel Air, MD 21014, (410) 879-1117 Hall Investigations
2830 Churchville Rd, Churchville, MD 21028, (410) 879-1117 B K
Lass Enterprise Inc
Upper Marlboro, MD 20772, (301) 952-0190 Lh Levy Investigations
Inc
Baltimore, MD 21201, (410) 653-9025 Naeva Geophysics Inc
4707 Benson Ave Ste 104, Halethorpe, MD 21227, (410) 536-7600
Accident Prevention & Investigation Inc
Baltimore, MD 21201, (410) 744-5325 DMF ID SERVICES
7746 EMERSON RD, Hyattsville, MD 20784, (301) 577-1442 Proctor
Investigations Incorporated
Parkville, MD 21234, (410) 882-9800 Opti Guard
421 Eastern Blvd, Essex, MD 21221, (410) 780-0010 Embrey S
11513 Falls Rd, Potomac, MD 20854, (301) 299-9645 Fallin
Investigative Services
12730 Twinbrook Pkwy Ste 212, Rockville, MD 20852, (301) 468-7010
Fyi Investigations Inc
Ellicott City, MD 21043, (410) 465-6658 Cobra Investigations Inc
Baltimore E, Baltimore, MD 21201, (410) 485-1630 Nsa Research Inc
100 Harbor View Dr, Baltimore, MD 21230, (410) 605-9630 Hamlet
Investigaters Incorporated
Millersville, MD 21108, (410) 987-2101 Fyi Investigations Inc
Baltimore, MD 21201, (410) 752-8885 Xavier Brooks
4212 Fairfax Rd, Baltimore, MD 21216, (443) 919-5800 Buddys
Caterers
Baltimore, MD 21201, (410) 242-6412 Blooming Buds Nursery & Garden
Baltimore, MD 21201, (410) 242-6412 Advance Industrial
1100 Taft St, Rockville, MD 20850, (301) 309-8292 Dominion
Security & Detective Agency
Capitol Heights, MD 20743, (301) 735-6000 Spotlight Security Inc
Temple Hills, MD 20748, (301) 423-6968 Securpros
9300 Annapolis Rd Ste 103, Lanham, MD 20706, (301) 459-8322 Tw
Security
7961 Eastern Ave, Silver Spring, MD 20910, (301) 565-5410 Holiday
International
1320 Fenwick Ln, Silver Spring, MD 20910, (301) 587-8101
Guardsmark Inc
8611 2nd Ave, Silver Spring, MD 20910, (301) 650-4183 Securiguard
Inc
6495 New Hampshire Ave, Hyattsville, MD 20783, (301) 891-0270
Metro One Loss Prevention Services Group
111 N Charles St, Baltimore, MD 21201, (410) 230-0099 Internal
Intelligence Service
4510 Old Frederick Rd, Baltimore, MD 21229, (410) 233-1515 Silver
Star Security
3709 E Monument St, Baltimore, MD 21205, (410) 563-6929 Alliance
Security
100 N Charles St Ste 1200, Baltimore, MD 21201, (410) 576-0290
Safe Home Security Services
8810 Pennsbury Pl, Rosedale, MD 21237, (410) 918-0300 Teamworks
10612 Beaver Dam Rd, Cockeysville, MD 21030, (410) 785-1212
KINGDOM SECURITY SERVICE
6111 HARLEY LN, Temple Hills, MD 20748, (301) 505-5001 General
Security Systems Inc
600 Reisterstown Rd, Pikesville, MD 21208, (410) 486-4747 Dunbar
Armored
577 Commerce Dr # B, Upper Marlboro, MD 20774, (301) 249-0500
Elite People Protective Services Inc
MD, Catonsville, MD 21228, (410) 744-0697 American Security
Programs
Rockville, MD 20850, (301) 762-7799 Four Corners Candid Camera
109 University Blvd W, Silver Spring, MD 20901, (301) 593-6700
Crossroads Investigations
Leonardtown, MD 20650, (301) 475-6847 Rankin Security Services
1209 N East St Ste H, Frederick, MD 21701, (301) 631-0152 Cannons
Online Inc
4504 Sams Creek Rd, New Windsor, MD 21776, (410) 775-1700 William
Berry Bail Bonds
108 S Main St Ofc, Bel Air, MD 21014, (410) 420-8544 J R P
Background Checks Inc
7310 Ritchie Hwy Ste 401, Glen Burnie, MD 21061, (410) 590-6959
Blackhawk Security
5210 Auth Rd Ste 402, Suitland, MD 20746, (301) 316-8180 Spectrum
Investigative & Consulting Solutions Inc
Stevensville, MD 21666, (410) 604-6970 Emerald Hills Townhomes
1500 Sunswept Dr, Bel Air, MD 21015, (410) 893-1500 Assets
Protection Inc
Essex, MD 21221, (410) 780-0010 M Edward Heilman
Upper Marlboro, MD 20772, (301) 627-9700 Statewide Bureau of
Investigations
Baltimore, MD 21201, (410) 355-7180 Morey E J
Columbia, MD 21044, (410) 740-3471 Safe and Secure Enterprises Inc
Annapolis, MD 21401, (410) 757-5665 Ces Security
Bowie, MD 20715, (301) 621-4105 Vip Security Services Inc
7700 Old Branch Ave, Clinton, MD 20735, (301) 856-0040 Community
Crime Watch
104 S Parke St, Aberdeen, MD 21001, (410) 272-8601 2916 Security
Inc
2 Bailiffs Ct Unit 102, Lutherville Timonium, MD 21093, (410) 453-6700 Contemporary Services Corp
551 Commerce Dr, Laurel, MD 20707, (410) 792-9952 Phelps
Protection Systems Inc
1908 Forest Dr Ste L, Annapolis, MD 21401, (410) 841-6233 World
Invstgtv - Headquarters
202 Woodlawn Dr, Forest Hill, MD 21050, (410) 893-2674 Summit
Alarm
10832 Green Mountain Cir, Columbia, MD 21044, (410) 884-0246
Parrott Security Inc
15863 Commerce Ct, Upper Marlboro, MD 20774, (301) 430-7100 Naval
Security Group Command
1207 Millstone Ct, Sykesville, MD 21784, (410) 552-9213 Commcl
Secty Sys Inc
Joppa, MD 21085, (410) 679-6301 Dunbar Armored
4845 Governors Way, Frederick, MD 21704, (301) 216-2200 Statewide
Bureau of Investigation
7201 Harford Rd, Parkville, MD 21234, (410) 254-1105 Sherwood
Investigation Agency
8206 Deerbrooke Ct, Pasadena, MD 21122, (410) 439-3900 Vera Quest
Group Inc
3701 Coastal Hwy, Ocean City, MD 21842, (410) 520-0100 Delmarva
Investigations
Salisbury, MD 21801, (410) 677-3463 Vital Information Services
5949 Sunset Ave, Gwynn Oak, MD 21207, (410) 744-2221 Stansbury
Investigative Services Inc
3337 E Joppa Rd, Parkville, MD 21234, (410) 882-2641 Randisi &
Associates Inc
806 Chestnut Glen Garth, Towson, MD 21204, (410) 494-0232 Admiral
Security Services
22 Light St, Baltimore, MD 21202, (410) 576-0601 Arrington &
Soistman Inc Guards
4718 Kenwood Ave, Baltimore, MD 21206, (410) 663-9200 Elite People
Protective Services Inc
5602 Baltimore Natinl Pke, Catonsville, MD 21228, (410) 744-0600
Pinkerton Security Services
Gwynn Oak, MD 21207, (443) 436-3200 Security Services &
Technologies
9810 Patuxent Woods Dr, Columbia, MD 21046, (443) 539-0222 Matrix
Security Systems
Gwynn Oak, MD 21207, (410) 277-0509 Target Investigations &
Personal Security Services
33 E Patrick St, Frederick, MD 21701, (301) 620-7979 Securitas
5 Public Sq, Hagerstown, MD 21740, (301) 791-5306 Americas Energy
Savers
6915 Golden Ring Rd, Rosedale, MD 21237, (410) 665-0800 High Tower
Investigative Group Inc
5305 Night Roost Ct, Columbia, MD 21044, (410) 992-4796 C C I
Services Inc
681 Main St, Laurel, MD 20707, (301) 604-9478 Properties Llc
Antietam
10 Brightwood Cir, Hagerstown, MD 21740, (240) 420-6900 R Scott
Wills Inc
10716 Lakespring Way, Cockeysville, MD 21030, (410) 666-5420 A & A
Alcohol Education
Dundalk, MD 21222, (410) 288-4855 Dunbar Armored
9603 Deereco Rd, Lutherville Timonium, MD 21093, (410) 560-1100
Aes Building and Home Improvement
Parkville, MD 21234, (410) 665-0800 Widenhouse & Associates
Edgewood, MD 21040, (410) 612-1300 Sovero & Associates T A
707 Empire Towers Bldg, Glen Burnie, MD 21061, (410) 590-6959 AAA
Surveillance
Severna Park, MD 21146, (410) 647-0544 Quickpace Process Service
Pikesville, MD 21208, (410) 653-9025 Infidelity Testers
106 W 25th St, Baltimore, MD 21218, (410) 889-1007 Gresham Medical
Services
106 W 25th St, Baltimore, MD 21218, (410) 889-1007 Osh Operative
Security Agency - Main Ofc
3014 Ferndale Ave, Gwynn Oak, MD 21207, (410) 448-2578 Prestige
Investigative Services
Pikesville, MD 21208, (410) 356-7566 Cotton Volpe Protective
Services Inc
Fallston, MD 21047, (410) 557-7008 Evergreen Security Patrol
16 N Hays St, Bel Air, MD 21014, (410) 638-9740 Special Operations
Group
Glen Burnie, MD 21061, (410) 760-9809 Nai Nic Augustus
Investigators
7134 Ducketts Ln, Elkridge, MD 21075, (410) 796-0808 Tabeling
Detective Agency
6308 Harford Rd, Baltimore, MD 21214, (410) 444-8731 Trump
Investment Counsel Inc
101 E Chesapeake Ave, Towson, MD 21286, (410) 823-1300 Iwg
Protection Agency
Baltimore, MD 21201, (410) 837-5544 Sfb Financial Services Inc
Towson, MD 21204, (410) 339-7171 Eagle Detective Agency
Baltimore, MD 21201, (410) 538-7100 Flgshp Invstgtng Inc
Columbia, MD 21044, (410) 720-0977 Evergreen Security Inc
Edgewood, MD 21040, (410) 612-1300 Globe Aviation
Baltimore Washington, Linthicum Heights, MD 21090, (410) 859-8500
Advance Security
11377 Robinwood Dr, Hagerstown, MD 21742, (301) 790-0092 Barton
Protective Services
111 Market Pl, Baltimore, MD 21202, (410) 332-0088 Alpha Security
Guard Services
7355 Swan Point Way, Columbia, MD 21045, (410) 381-3810 Minute Man
Security
2235 N Ellamont St, Baltimore, MD 21216, (410) 523-4484 King
Security
101 W Read St, Baltimore, MD 21201, (410) 625-0155 Special
Response Corporation
Hunt Valley, MD 21031, (410) 785-1212 Roc Protection & Security
Inc
6215 Sandpiper Ct Apt 104, Elkridge, MD 21075, (410) 796-3900 2916
Security
Towson, MD 21204, (410) 453-6700 Bank Services Inc
8 W Hamilton St, Baltimore, MD 21201, (443) 460-0321 Ces Security
Pikesville, MD 21208, (443) 471-7000 Commercial Security Systems
Inc
Joppa, MD 21085, (410) 679-6301 Cognisa Security Inc
231 E Baltimore St Ste 1001, Baltimore, MD 21202, (410) 234-0890
Chesapeake Group
Upper Marlboro, MD 20772, (301) 574-0500 Chesapeake Services
202 Anchor Ln, Chester, MD 21619, (410) 643-3731 Checkmate
Investigative Services Inc
10840 Little Patuxent Pkwy, Ellicott City, MD 21043, (410) 720-6110 Checkmate Investigative Services Inc
9421 Farewell Rd, Columbia, MD 21045, (301) 596-7173 Chesapeake
Polygraph Services
Towson, MD 21204, (410) 296-1885 World Investigative Services
Baltimore, MD 21201, (410) 682-5563 Cignal America Corporation
2203 Saint Paul St, Baltimore, MD 21218, (410) 235-5577 Cobra
Investigations
Dundalk, MD 21222, (410) 288-4855 Cochran & Associates
Fallston, MD 21047, (410) 877-7950 Colbert Matz Rosenfelt
Investigative Engineers
2835 Smith Ave Ste G, Baltimore, MD 21209, (410) 653-4094 Cmcb
Private Investigations & Security Services
Fork, MD 21051, (410) 515-3514 CMS Training Academy and Protective
Services
4400 Stamp Road, Temple Hills, MD 20748, (301) 899-7895 Collision
Graphics
10716 Lakespring Way, Cockeysville, MD 21030, (410) 666-5420
Investigative Services
Severna Park, MD 21146, (410) 544-7147 Commercial Index Bureau Inc
5205 East Dr Ste O, Halethorpe, MD 21227, (410) 242-8150 K-9
Services Inc
Ellicott City, MD 21043, (410) 480-0800 Concorde Investigations
Inc
7904 7 Mile Ln, Pikesville, MD 21208, (410) 602-1675 Confidential
Services
Baltimore, MD 21201, (410) 576-0481 Comprehensive Investigations
Lutherville Timonium, MD 21093, (410) 252-6511 Contemporary
Services Corp
Upper Marlboro, MD 20772, (301) 390-7510 Corporated International
Business Centers
International Finance Centers, Towson, MD 21204, (410) 665-0800
Corporate Security Services
Bel Air, MD 21014, (410) 836-5926 Cops Inc
111 N Potomac St, Hagerstown, MD 21740, (301) 791-7039 Counter
Technology Inc
4733 Bethesda Ave Ste 200, Bethesda, MD 20814, (301) 907-0127
Craig Victor
Waldorf, MD 20602, (301) 843-1371 Crime Solvers of Calvert County
Prince Frederick, MD 20678, (410) 535-2880 Crime Prevention
Network Inc
Salisbury, MD 21801, (410) 341-0933 Crown Security System Inc
2203 Saint Paul St, Baltimore, MD 21218, (410) 235-5577 Elite
Protective Services Inc
2411 Blueridge Ave, Kensington, MD 20895, (301) 949-9716
Employment Background Investigation
20 New Plant Ct, Owings Mills, MD 21117, (410) 486-0730 Employment
Background Investigations
Pikesville, MD 21208, (410) 486-7585 Employment Background
Investigations
Pikesville, MD 21208, (410) 486-0730 Excel Associates Inc
8108 Harford Rd, Parkville, MD 21234, (410) 882-0378 Executive
Investigation Bureau Inc
7119 Harford Rd, Parkville, MD 21234, (410) 882-9292 Ever Green
Security Inc
MD, Fork, MD 21051, (410) 893-2228 Evergreen Security &
Investigations
900 S Main St Bldg A, Bel Air, MD 21014, (410) 893-2228 Evergreen
Security & Investigations
101 E Chesapeake Ave, Towson, MD 21286, (410) 823-7500 Expert
Security Services Inc
Elkridge, MD 21075, (410) 798-0871 Fallin Investagtive Services
702 E Gude Dr, Rockville, MD 20850, (301) 279-7726 Facticon
1818 Pot Spring Rd Ste 208, Lutherville Timonium, MD 21093, (410)
560-6168 Federal Armored Express Inc
8340 Beechcraft Ave, Gaithersburg, MD 20879, (301) 417-9707 Fast
Track Process
7941 Bennett Branch Rd, Mount Airy, MD 21771, (301) 831-7747 Fells
Citizens On Patrol
700 S Ann St, Baltimore, MD 21231, (410) 342-7354 Fyi Finger Print
Services
3696 Park Ave Ste 202, Ellicott City, MD 21043, (410) 418-4657
Force One Security
600 Reisterstown Rd, Pikesville, MD 21208, (410) 486-8416 Candid
Camera Four Corners - Photographer
109 University Blvd W, Silver Spring, MD 20901, (301) 593-6700 Fox
Investigations Inc
Waldorf, MD 20602, (301) 843-8730 Fortress Lock Safe & Security
10220 Roland Ln, Fort Washington, MD 20744, (301) 248-9750
Frederick Detective Agency
321 W Patrick St, Frederick, MD 21701, (301) 694-5392 Frasier
Private Detective Agency
1750 Rockville Pike, Rockville, MD 20852, (301) 984-8514 Fischer
Associates International Inc
Crofton, MD 21114, (410) 721-8701 Flagship Security
8970 State Route 108, Columbia, MD 21045, (410) 720-0977 Hewett &
Associates
Keedysville, MD 21756, (301) 432-5009 Herman Martin B Detctv
Towson, MD 21204, (410) 494-1900 His Associates
New Market, MD 21774, (301) 607-6062 Home Health Care Escort
Service Inc
1042 Patapsco St, Baltimore, MD 21230, (410) 727-4292 Iep Inc
Baltimore Metro, Bel Air, MD 21014, (410) 838-9515 I Interstate
Supply Co
1217 Greenwood Rd, Pikesville, MD 21208, (410) 484-5966 Insurance
Investigation Inc
313 Clear Ridge Rd, Union Bridge, MD 21791, (410) 775-1800
Intelagents Llc
Annapolis, MD 21401, (410) 990-9092 Intelagents Llc
210 Pier 1 Rd Ste 204, Stevensville, MD 21666, (410) 604-1709
Intercept Investigations
Pikesville, MD 21208, (410) 356-3939 International Claims
Specialists
Baltimore, MD 21201, (410) 444-8021 Internal Affairs
Corporate-Privte Scrty & Invstgtn
Cumberland, MD 21502, (301) 724-8900 International Executive
Protection
Bel Air, MD 21014, (410) 879-9665 Initial Security
8555 16th St Ste 101, Silver Spring, MD 20910, (301) 587-0155
Ironside Investigations
Frostburg, MD 21532, (301) 687-0500 I Port Systems
Baltimore, MD 21201, (410) 889-1423 James R Klima Cfp
10025 Governor Warfld Pkwy, Columbia, MD 21044, (410) 997-1100 J
Brightwell
320 E Towsontown Blvd, Towson, MD 21286, (410) 823-6024 J Kennedy
Investigative Services
Randallstown, MD 21133, (410) 655-4400 Armored Car Services Inc
Cumberland, MD 21502, (301) 759-4500 Argenbright Security Inc
231 E Baltimore St Ste 1001, Baltimore, MD 21202, (410) 230-0002
Associated Investigators Inc
Md, Capitol Heights, MD 20743, (301) 925-6929 At Systems
2638 Merchant Dr, Baltimore, MD 21230, (410) 646-1200 Atmsi
Columbia, MD 21044, (410) 740-4445 Atlantic Security Professionals
Llc
702 E Gude Dr Unit C, Rockville, MD 20850, (301) 279-7726 Atlantic
Coast Investigators
811 Long Cove Rd, Glen Burnie, MD 21060, (410) 255-6848 Atlas
Investigations Inc
Baltimore, MD 21201, (410) 687-9556 Athey & Associates Inc
Columbia, MD 21044, (410) 531-7550 Atlas International Security
Inc
6072 Central Ave, Capitol Heights, MD 20743, (301) 324-0060
Atlantic Security Professionals
104 E Ridgeville Blvd, Mount Airy, MD 21771, (301) 831-0457
Baltimore Security Systems Inc
809 Frederick Rd Ste 2, Catonsville, MD 21228, (410) 788-7800
Barnhart L E Investigations
Hagerstown, MD 21740, (301) 791-6211 Baltimore Polytechnical
Institute Airforce Jr ROTC
1400 W Cold Spring Ln, Baltimore, MD 21209, (410) 889-1976 B & B
Security Consultants Inc
2300 Shorefield Rd, Silver Spring, MD 20902, (301) 962-4948 Barton
Protective Services
La Plata, MD 20646, (301) 934-6870 Battaglia Security &
Investigative Serv Ltd
13198 E Greenbank Rd, Middle River, MD 21220, (410) 335-8283 Bear
Paw Investigation
18321 Woodside Dr, Hagerstown, MD 21740, (301) 791-5332 Beltrante
& Associates
Md, Bethesda, MD 20814, (301) 654-0200 Bernard Price & Associates
Bowie, MD 20716, (301) 577-1510 Bennett Security Service
1325 Mount Hermon Rd Ste 12a, Salisbury, MD 21801, (410) 742-0334
I A Inc
Severna Park, MD 21146, (410) 544-2065 Hyden & Associates
Elkton, MD 21921, (410) 620-1701 Blackhawk Inc
Suitland, MD 20746, (301) 316-5441 Blackhawk Inc
Baltimore, MD 21201, (410) 354-4004 Bodyguard Security Escort
Service Ltd
White Marsh, MD 21162, (410) 529-8135 Kroll Background America Inc
4312 Black Rock Rd, Hampstead, MD 21074, (410) 239-0415 Bradley
Investigative Group
8022 Mckenstry Dr, Laurel, MD 20723, (301) 490-9082 Brinks
3610 Commerce Dr Ste 801, Halethorpe, MD 21227, (410) 247-5381
BRINKS INCORPORATED
3610 COMMERCE DR STE 801, Baltimore, MD 21227, (410) 536-2050
Brinks Inc
10620 Guilford Rd, Jessup, MD 20794, (410) 792-2898 Brooks Armored
Car Service Inc
2638 Merchant Dr, Baltimore, MD 21230, (410) 646-1200 Broadway
Services Inc
3709 E Monument St, Baltimore, MD 21205, (410) 563-6900 Cablecats
1110 Bonifant St, Silver Spring, MD 20910, (301) 587-3111 Burns
Internatioal Security Service
7004 Security Blvd, Windsor Mill, MD 21244, (443) 436-3200
Burns-Pinkerton Securitas Companies
Gwynn Oak, MD 21207, (443) 436-3200 SECURITAS SECURITY SERVICE USA
INC.
7004 SECURITY BLVD, Baltimore, MD 21244, (443) 436-3200
Pinkerton-Burns International Security Services
5 Public Sq, Hagerstown, MD 21740, (301) 791-5306 Capitol
Investigations Unlimited Inc
Kensington, MD 20895, (301) 493-9374 Central 9 Investigations
Rockville, MD 20850, (301) 309-1244 Castle Security Group Inc
809 Frederick Rd Ste 2, Catonsville, MD 21228, (410) 788-7800
Central Security Investigation Agency
200 S Arlington Ave Ste 200, Baltimore, MD 21223, (410) 837-6900
Centurion Investigation Agency Inc
349 Main St, Laurel, MD 20707, (301) 953-1909 Ces Security
Silver Spring, MD 20901, (301) 608-8264 C E S Security
8555 16th St, Silver Spring, MD 20910, (301) 608-8264 Ces
115 Mchenry Ave, Pikesville, MD 21208, (443) 471-7000 C E S
Security Inc
5305 Old Court Rd, Randallstown, MD 21133, (410) 922-8900 Cummings
Investigative Services Inc
Annapolis, MD 21401, (410) 956-2077 Data Technology Security &
Investigation
Baltimore, MD 21201, (410) 944-3200 Das Security Patrol Lic &
Private Investigations
1717 Turkey Point Rd, North East, MD 21901, (410) 287-7019
Datawatch Systems Inc
4401 E West Hwy Ste 500, Bethesda, MD 20814, (301) 654-2371 Davis
Investigative Services
Waldorf, MD 20602, (301) 843-7288 Diplomatic Security Consultants
Westminster, MD 21157, (410) 346-7880 Detective Agency the
7941 Bennett Branch Rd, Mount Airy, MD 21771, (301) 831-7747 D
Hodgson Associates Inc
3000 Chestnut Ave Ste 100c, Baltimore, MD 21211, (410) 366-1286
Diamonds Delivery Services
Hyattsville, MD 20781, (301) 773-7367 D & L Insulation
1234 Delmar, Delmar, MD 21875, (410) 896-4178 Diversified
Investigations Inc
3109 Northmont Rd, Windsor Mill, MD 21244, (410) 496-7200
Donaldson Investigations
Dc, Kensington, MD 20895, (301) 231-7745 Donaldson Investigations
Ltd
Annapolis, MD 21401, (410) 956-0019 Donaldson Investigations Ltd
Arnold, MD 21012, (410) 269-5889 Donaldson Investigations Ltd
Baltimore, MD 21212, (410) 323-0308 Donaldson Investigations Ltd
Catonsville, MD 21228, (410) 747-4812 Donaldson Investigations Ltd
Columbia, MD 21044, (410) 997-0519 Donaldson Investigations Ltd
Crofton, MD 21114, (410) 721-6366 Donaldson Investigations Ltd
Dundalk, MD 21222, (410) 282-8219 Donaldson Investigations Ltd
Essex, MD 21221, (410) 687-1811 Donaldson Investigations Ltd
Gaithersburg, MD 20877, (301) 948-3068 Donaldson Investigations
Ltd
Glen Burnie, MD 21061, (410) 761-0112 Donaldson Investigations Ltd
Hyattsville, MD 20781, (301) 779-4628 Donaldson Investigations Ltd
Owings Mills, MD 21117, (410) 363-9280 Donaldson Investigations
Ltd
Oxon Hill, MD 20745, (301) 839-9943 Donaldson Investigations Ltd
Prince Frederick, MD 20678, (410) 535-9290 Donaldson
Investigations Ltd
Rockville, MD 20850, (301) 340-9486 Donaldson Investigations Ltd
Severna Park, MD 21146, (410) 544-7147 Donaldson Investigations
Ltd
Silver Spring, MD 20901, (301) 441-3768 Donaldson Investigations
Ltd
Towson, MD 21204, (410) 321-1520 Donaldson Investigations Ltd
Upper Marlboro, MD 20772, (301) 627-7738 Dominion Security &
Detective Agency
5705 Old Silver Hill Rd, District Heights, MD 20747, (301) 735-6000 Dominion Security & Detective Agency
Silver Spring, MD 20901, (301) 518-5379 Dunbar Armored
6510 Virginia Manor Rd, Beltsville, MD 20705, (240) 387-0075
Dunbar Armored
Cumberland, MD 21502, (301) 759-4500 Dunbar Armored
8340 Beechcraft Ave, Gaithersburg, MD 20879, (301) 216-2200 Dunbar
Armored
5778 Commerce Dr, Upper Marlboro, MD 20772, (301) 249-0500 Dunbar
Armored
7675 Canton Center Dr, Baltimore, MD 21224, (410) 285-7000 Dtm
Corporation
1320 Fenwick Ln Ste 700, Silver Spring, MD 20910, (301) 589-0303
Dunbar Guard Services
7675 Canton Center Dr, Baltimore, MD 21224, (410) 285-8400 Dun
Rite Security Services
9244 E Hampton Dr Ste 632, Capitol Heights, MD 20743, (301) 499-2388 Dynamite Security & Investigations Inc
5801 Riverdale Rd Ste 101, Riverdale, MD 20737, (301) 779-4629
East Coast Investigation
Edgewood, MD 21040, (410) 679-7033 Ebi Inc
Pikesville, MD 21208, (410) 486-0730 Eagle Security Agency
Rockville, MD 20850, (301) 948-7770 Eagle Security & Detective
Agency
18502 Office Park Dr, Montgomery Village, MD 20886, (301) 948-7770 Eagle Technologies Inc
9301 Annapolis Rd Ste 200, Lanham, MD 20706, (301) 306-0910 Eis
Inc
6001 Montrose Rd Ste 702, Rockville, MD 20852, (301) 881-3232
Electronic Security Servi
15050 Buck Ln, Upper Marlboro, MD 20772, (301) 780-8480 Futrek
Corporation
1110 Bonifant St, Silver Spring, MD 20910, (301) 587-3111 Gartland
& Associates Inc
La Plata, MD 20646, (301) 609-8478 Giannetti & Associates
12934 Asbury Dr, Fort Washington, MD 20744, (301) 203-0151 Global
Investigative Services
Silver Spring, MD 20901, (301) 589-0088 Graham Security Services
Inc
7223 Baltimre Annpls Blvd, Glen Burnie, MD 21061, (410) 768-4103
Greater Baltimore Board of Realtors
1306 Bellona Ave, Lutherville Timonium, MD 21093, (410) 337-7200
Gxs Investigations and Forensic Research
Bowie, MD 20716, (301) 249-6857 Guardian Security Training Academy
2411 Blueridge Ave, Silver Spring, MD 20902, (301) 949-4676
Guardsmark Llc
101 W Read St Ste 108, Baltimore, MD 21201, (410) 528-1324
Guardian Door & Window
Baltimore, MD 21201, (410) 234-8133 Hall Investigations
North East, MD 21901, (410) 392-9737 Harford Bureau of
Investigation & Process Ltd
125 N Main St, Bel Air, MD 21014, (410) 893-4610 Haole & Kanakia &
Associates
Lanham, MD 20706, (301) 429-1491 Harford County Crime Solvers
Fallston, MD 21047, (410) 877-7867 Harrison R G & Associates Inc
Stevensville, MD 21666, (410) 643-8717 Harford Bureau of
Investigation & Process Ltd
Fork, MD 21051, (410) 893-4610 John Friel & Associates
12302 Winding Ln, Bowie, MD 20715, (301) 262-6175 K-9 Security Co
College Park, MD 20740, (301) 474-2100 Jsh Professional Services
404 Lake Ter, Lusby, MD 20657, (410) 394-0735 J V Grimes
Investigations
Bowie, MD 20715, (301) 218-9025 Keller Denise Lichliter
11100 Mapleville Rd, Hagerstown, MD 21742, (301) 797-6967 Kent
Island Armory
324B Main Street, Stevensville, MD 21666, (410) 604-6014 Kissel
Investigations
Dundalk, MD 21222, (410) 285-7510 KNIGHT PROTECTIVE SERVICE
1521 S EDGEWOOD ST, Baltimore, MD 21227, (410) 644-6606 Knight
Protective Service
8507 Edgeworth Dr, Capitol Heights, MD 20743, (410) 792-4562
Knight Protective Service
8507 Edgeworth Dr, Capitol Heights, MD 20743, (301) 808-4669
Kreative Control Systems Inc
830 E Baltimore St, Baltimore, MD 21202, (410) 347-0070 William
Berry & Associates
140 E Main St, Elkton, MD 21921, (410) 392-0310 Lewis J Neuwelt
Investigations
9175 Guilford Rd Ste 212, Columbia, MD 21046, (301) 604-5135
Loomis Fargo & Co
6170 Frankford Ave, Baltimore, MD 21206, (410) 325-8800 LOOMIS
FARGO and CO
8940 STATE ROUTE 108 STE G, Columbia, MD 21045, (410) 740-4445
Lloyd T Clark
8107 Carroll Ln, Silver Spring, MD 20910, (301) 589-0758 Magnaum
Investigative Services
211 Perry Pkwy Ste 3, Gaithersburg, MD 20877, (301) 963-9030
Magnum Investigative Services
20201 Century Blvd, Germantown, MD 20874, (301) 424-1770 Males
Investigative Services Inc
Severna Park, MD 21146, (410) 384-9335 Manning Gregory Assocs
1061 Turkey Point Rd, Edgewater, MD 21037, (410) 556-6379 Maryland
Institute of Criminal Justice
8424 Veterans Hwy Ste 3, Millersville, MD 21108, (410) 987-8181
Maryland Claims Investigations Inc
Baltimore, MD 21201, (410) 256-6161 May T S & Associates
150 W Patrick St, Frederick, MD 21701, (301) 695-2662 Maxwell
Private Investigations Inc
Severna Park, MD 21146, (410) 647-0544 Maryland Small Arms Range
9311 Old Marlboro Pike, Upper Marlboro, MD 20772, (301) 599-0800
Mathis Detective Agency La Westminster
2750 Murkle Rd, Westminster, MD 21158, (410) 848-2505 Master
Security Inc
10944 Beaver Dam Rd Ste C, Cockeysville, MD 21030, (410) 584-8789
Tim May Investigations
Frederick, MD 21701, (301) 695-2662 Maryland Security Services Inc
Fork, MD 21051, (410) 557-6933 McCook Investigations
White Plains, MD 20695, (301) 753-1731 Metropolitan Protection
Services
Hyattsville, MD 20781, (301) 772-2412 Metropolitan Protective
Services
6200 Annapolis Rd Spc 405, Hyattsville, MD 20784, (301) 772-2412
Metlife Securities Inc
3114 Evergreen Way, Ellicott City, MD 21042, (410) 531-7030 Ocean
City Weekly Rentals & Maintenance
700 S Philadelphia Ave, Ocean City, MD 21842, (410) 289-7888
Mid-Atlantic Air
22 W Padonia Rd, Lutherville Timonium, MD 21093, (410) 252-3600
Off Duty Police Security Services Inc
6314 Kenwood Ave, Rosedale, MD 21237, (410) 866-6150 On Track
Investigations Inc
6 N Main St, Bel Air, MD 21014, (410) 420-8544 Orion Protective
Services
1410 Gunston Rd, Bel Air, MD 21015, (410) 879-3134 Osh Operative
Security Agency - Main Ofc
3014 Ferndale Ave, Gwynn Oak, MD 21207, (410) 448-2578 Out of the
Area
707 Buoy Ct, Annapolis, MD 21401, (410) 349-0154 Pdq Private
Investigations & Processors Inc
625 Nj Av, Essex, MD 21221, (410) 574-5168 Pdq Private
Investigator
429 Eastern Blvd, Essex, MD 21221, (410) 574-5168 Patuxent
Associates Inc
Dunkirk, MD 20754, (410) 257-0654 Pedestal Gardens Police
Sub-Station
325 Mcmechen St, Baltimore, MD 21217, (410) 728-8200 Peninsula
Professional Services Inc
Ocean City, MD 21842, (410) 641-1300 Perfecting Praise Chapel
2203 Maryland Ave, Baltimore, MD 21218, (410) 235-2900 Pikesville
Military Reservation
610 Reisterstown Rd, Pikesville, MD 21208, (410) 653-9679
Pinkerton Security and Investigations
351 Civic Ave, Salisbury, MD 21804, (410) 341-0716 Polygraph
Examinations by R L Sheldon
Baltimore, MD 21201, (410) 879-6657 Potomac Private Investigations
Rockville, MD 20850, (301) 231-9612 Process Service Unlimited
7941 Bennett Branch Rd, Mount Airy, MD 21771, (301) 831-7747
Pro-Alert Security Inc
18 N Federal St, Damascus, MD 20872, (301) 607-6540 Pre-Employment
Research Associates Inc
2400 Mt Ventus Rd Numbr 1, Manchester, MD 21102, (410) 239-6767
Prime Investigations Inc
Upper Marlboro, MD 20772, (301) 627-1011 Prince Investigative
Services
Hampton Mall, Capitol Heights, MD 20743, (301) 336-0700 Prince
Security Services
8701 Georgia Ave Ste 608, Silver Spring, MD 20901, (301) 563-3333
Proactive Investigations
Gaithersburg, MD 20877, (301) 515-0212 Proactive Special Security
Services
Clopper, Gaithersburg, MD 20878, (301) 977-6208 Proactive Special
Security Services
15200 Shady Grove Rd Ste 350, Rockville, MD 20850, (301) 296-4410
Protection Svc Inc
124 Roesler Rd, Glen Burnie, MD 21060, (410) 768-7984 Professional
Investigations
Riverdale, MD 20737, (301) 277-9838 Professional Investigations of
Maryland Inc
Waldorf, MD 20602, (301) 843-3131 Pub Security & Investigations
Inc
803 Streambank Ct, Towson, MD 21286, (410) 321-1771 Quality
Security Solutions Inc
9975 Old Mill Rd, Ellicott City, MD 21042, (410) 313-9076
Pulvirenti & Horseman Private Investigations Inc
8031 Park Haven Rd, Dundalk, MD 21222, (410) 284-4014 Rankin
Martial Arts
307 E 9th St, Frederick, MD 21701, (301) 631-0152 R B T S Ltd
1300 Mercantile Ln, Upper Marlboro, MD 20774, (301) 583-1271
Resource Reporting Limited
7941 Bennett Branch Rd, Mount Airy, MD 21771, (301) 831-7747
Retail Shoppers Network Inc
14440 Cherry Lane Ct, Laurel, MD 20707, (301) 317-9755 Resco
Security Services
4710 Auth Place, Suitland, MD 20746, (301) 423-3366 Robinson
Detective Agency
111 E 25th St, Baltimore, MD 21218, (410) 235-2900 Robert Lankford
Investigations
Princess Anne, MD 21853, (410) 651-4497 Roche John Investigations
Baltimore, MD 21201, (410) 893-2659 Safe-T-Child
Westminster, MD 21157, (410) 751-6433 Safewatch Security Inc
3885 Branch Ave, Temple Hills, MD 20748, (301) 316-0331 Safe Sites
Security Co Inc
8 Carissa Ct, Owings Mills, MD 21117, (443) 394-5984 Schmidlin
Tracer Service
Hyattsville, MD 20781, (301) 927-0525 Scottys Investigations Inc
Hagerstown, MD 21740, (301) 393-4783 Schroeder & Associates
Investigative Services
Mount Airy, MD 21771, (410) 875-9510 Schwartz Fire Specialist
6700 Woodbine Rd, Sykesville, MD 21784, (410) 795-4313 Scottys
Investigations Inc
515 Regina Ave, Cumberland, MD 21502, (301) 777-0232 Search &
Locate Investigations
Severna Park, MD 21146, (410) 269-5622 Search & Locate
Investigations
Silver Spring, MD 20906, (301) 924-2434 Search Your Nannys Past
Baltimore, MD 21201, (410) 269-5622 Carrolltowne Mall Security
Carrolltown Vlg, Sykesville, MD 21784, (410) 552-6662 Security
Affairs Support
141 National Busnss Pkwy Ste 112, Annapolis Junction, MD 20701, (240)
554-0250 Security Administration Services Inc
421 Eastern Blvd, Essex, MD 21221, (410) 780-0010 Search Your
Nannys Past Background Investigations
Rockville, MD 20850, (301) 656-5622 Security Dogs
611 S Addison St, Baltimore, MD 21223, (410) 947-4748 Security
Guards Inc
504 Channel Pl, Aberdeen, MD 21001, (410) 272-7361 Security
Service Network
6935 Wisconsin Ave, Chevy Chase, MD 20815, (301) 215-6441 SECURITY
SERVICES OF AMERICA
9470 ANNAPOLIS RD SUITE 312, Lanham Seabrook, MD 20706, (301) 306-3890 Security Systems International
9311 Old Marlboro Pike, Upper Marlboro, MD 20772, (301) 599-9800
Sentry One Services Inc
Church Hill, MD 21623, (410) 556-6565 Sharma Detective & Security
Agency
Germantown, MD 20874, (301) 540-6100 S & H Investigators
1312 Taylors Island Rd, Cambridge, MD 21613, (410) 228-2020 Shore
Investigations
30902 Ward Rd, Salisbury, MD 21804, (410) 548-2170 SLEUTH
PO BOX 13, Poolesville, MD 20837, (301) 605-3931 Allegany
Investigations
Cumberland, MD 21502, (301) 724-3878 Paragon Investigations
Fork, MD 21051, (410) 592-3327 Talon Security Agency
Southern Md, Hughesville, MD 20637, (301) 274-9225 Expert Security
607 S Camp Meade Rd, Linthicum Heights, MD 21090, (410) 796-0871
Fyi Investigations Inc
Annapolis, MD 21401, (410) 268-4680 Aviation Safeguards
780 Elkridge Landing Rd, Linthicum Heights, MD 21090, (410) 684-2722 Haole & Kanaka and Associates
Glen Burnie, MD 21061, (410) 761-6700 S & W Protective Services
Inc
5620 Saint Barnabas Rd, Oxon Hill, MD 20745, (301) 630-6700
Investigative Resouce Group Llc
Po Box 865, Funkstown, MD 21734, (240) 420-6900 Msm Security Svcs
7515 Mission Dr, Lanham, MD 20706, (301) 352-8203 K-9 Security Co
Ltd
Silver Spring, MD 20901, (703) 525-2700 AAA Surveillance
Severn, MD 21144, (410) 519-6539 Donaldson Investigations Ltd
Easton, MD 21601, (410) 763-7166 Investigative Services
Easton, MD 21601, (410) 763-7166 Inquiries Inc
129 N West St, Easton, MD 21601, (410) 819-3711 Proactive Special
Security Services
Gaithersburg, MD 20877, (301) 515-0212 McCauley Confidential
Investigations
Po Box 77, New Market, MD 21774, (301) 668-4911 Code 3 Security
Service & Private Dectective Agncy
Silver Spring, MD 20901, (301) 346-5818 Commando K-9 Detectives
Inc
7701 Woodyard Rd, Clinton, MD 20735, (301) 877-2364 Donaldson
Investigations
Centreville, MD 21617, (443) 262-9299 Investigative Services
Centreville, MD 21617, (443) 262-9299 Cotton & Krahling Special
Services Inc
7125 Harford Rd, Parkville, MD 21234, (410) 254-8600 Bti Security
8701 Georgia Ave Ste 804, Silver Spring, MD 20901, (301) 562-9201
Tri State Security
1718 Temi Dr, Waldorf, MD 20601, (301) 632-6772 Lighthouse
Security Inc
9244 E Hampton Dr Ste 628, Capitol Heights, MD 20743, (301) 333-1955 Bank Services Inc
6915 Golden Ring Rd, Rosedale, MD 21237, (410) 580-2004 Direct
Security & Investigative Services
6609 Reisterstown Rd, Baltimore, MD 21201, (410) 585-0570 World
Invstgtv
202 Woodlawn Dr, Forest Hill, MD 21050, (410) 893-2674 Calvin D
Hall
Elkton, MD 21921, (410) 392-9737 Calvin D Hall
Bel Air, MD 21014, (410) 879-1117 Corporated International
Business Center
International Resources Centers, Towson, MD 21204, (410) 665-0800
Investigative Services
Dc, Kensington, MD 20895, (301) 231-7745 Marts & Associates
Investigative Services
Annapolis, MD 21401, (443) 336-2027 Investigative Services
Crofton, MD 21114, (410) 721-6366 Eagle Detective Agency
15 Paula Pl Apt 1c, Rosedale, MD 21237, (410) 686-1991 Securitas
Security Services USA Inc
8555 16th St Ste 550, Silver Spring, MD 20910, (301) 608-1599
Prudential Financial
15209 Frederick Rd Ste 204, Rockville, MD 20850, (301) 279-6700
Lyons & Wolivar Investigations
Potomac, MD 20854, (301) 299-7944 Investigative Services
Leonardtown, MD 20650, (301) 475-7056 Universal Mortgage Company
Llc
Germantown, MD 20874, (301) 540-6100 United Union of Security
Guards
13611 Sir Thomas Way, Silver Spring, MD 20904, (301) 847-3400
Private Protective Inc
6192 Oxon Hill Rd, Oxon Hill, MD 20745, (301) 839-3500 Softworld
Marketing
Clinton, MD 20735, (301) 856-1978 Spartan Security
3737 Branch Ave, Temple Hills, MD 20748, (301) 899-1408 Security
Product Inc
14401 Brookmead Dr, Germantown, MD 20874, (301) 947-1717 Spm
4518 Beech Rd, Temple Hills, MD 20748, (301) 702-0012 Spotlight
Security Inc
5935 Fisher Rd Apt 203, Temple Hills, MD 20748, (301) 505-0100
Corporated International Business Centers
International Training Centers, Parkville, MD 21234, (410) 665-0800 Investigative Services
Prince Frederick, MD 20678, (410) 535-9290 Investigative Services
Essex, MD 21221, (410) 687-1811 Nai Investigators
Elkridge, MD 21075, (410) 796-0808 Shetty Y K MD
8118 Philadelphia Rd, Rosedale, MD 21237, (410) 866-2222 MacGibbon
John B MD
8118 Philadelphia Rd, Rosedale, MD 21237, (410) 866-2222 William
Berry Bail Bonds
140 E Main St, Elkton, MD 21921, (410) 420-8544 Legal Age Security
Software Inc
327 Curtis Ave, Elkton, MD 21921, (410) 620-0209 Mid Atlantic
Investigative Services
3490 Woodholm Dr, Hampstead, MD 21074, (410) 374-8380 Chesapeake
Plygrph & Investigative Services
9 Lagan Ct, Nottingham, MD 21236, (410) 256-2818 Champion Private
Detective Agency
Glen Burnie, MD 21061, (443) 889-1656 Champion Security Guard
Service
Glen Burnie, MD 21061, (443) 889-1656 Securitas Security Services
5291 Corporate Dr, Frederick, MD 21703, (301) 620-9004 Aesa
Builder & Home Improvement
7305 Belair Rd, Baltimore, MD 21206, (410) 665-0800 Chesapeake
Investigative Services
Trappe, MD 21673, (410) 476-4775 Divorce Work Specialists
Easton, MD 21601, (410) 763-7166 Divorce Work Specialists
Centreville, MD 21617, (443) 262-9299 L E Barnhart Security &
Investigation
11706 White Hall Rd, Smithsburg, MD 21783, (301) 791-6211
Community Patrol & Security Group Inc
8365 Snouffer School Rd, Gaithersburg, MD 20879, (301) 963-6480
Carrolltowne Mall
6400 Ridge Rd, Sykesville, MD 21784, (410) 552-6662 Nothing But
Attitude
Bowie, MD 20715, (301) 262-6226 Woodswork-Nothing But Attitude
Bowie, MD 20715, (301) 262-6226 Amsecs
14907 Habersham Cir, Silver Spring, MD 20906, (301) 438-0500
Unique Security Services
6108 Old Silver Hill Rd, District Heights, MD 20747, (301) 420-3742 Gold Shield Security Services
16 Chestnut St, Gaithersburg, MD 20877, (301) 519-2122 Pinkerton
Security Services
Silver Spring, MD 20901, (301) 608-1599 Jac Hi-Tech Security
Service Llc
16430 Gardner Rd, Waldorf, MD 20601, (301) 782-3054 Adt Security
Services Inc
2 Metropolitan Ct Ste 8, Gaithersburg, MD 20878, (301) 212-9048
Search & Locate Unlimited Investigative Services
11140 Rockville Pike, Rockville, MD 20852, (301) 924-2434
Associated Investigators Inc
9200 Basil Ct, Hyattsville, MD 20785, (301) 925-6929 Privateers
Detective Agency
Elkton, MD 21921, (410) 392-9737 Miller Electric Company Inc
7600 Rickenbacker Dr, Gaithersburg, MD 20879, (301) 963-9700 2916
Towson, MD 21204, (410) 453-6700 Adt Security Services Inc
Service & Customer Monitoring Center, Hyattsville, MD 20781, (301)
853-2000 Adt Security Services Inc
Commercial Sales, Hyattsville, MD 20781, (703) 212-8300
Intelagents
2811 Cox Neck Rd, Chester, MD 21619, (410) 604-1708 Michael S Race
Investigations
14019 Bauer Dr, Rockville, MD 20853, (516) 409-0404 L I S
701 Washington Blvd S, Laurel, MD 20707, (301) 490-1778 Direct
Investigative Services Inc
Owings Mills, MD 21117, (410) 363-4156 American Investigative
Protective & Training Rsrce
Greensboro, MD 21639, (410) 482-1129 Craig Investigations Inc
220 Maple Ave, Rockville, MD 20850, (212) 268-3611 Widenhouse &
Associates
900 S Main St Bldg A, Bel Air, MD 21014, (410) 893-2228 Legal
Services Associates
407 W Franklin St, Baltimore, MD 21201, (410) 225-0991 Talon
Security Agency
Mechanicsville, MD 20659, (301) 884-2237 Talon Detective Agency
29190 Three Notch Rd, Mechanicsville, MD 20659, (301) 884-2237 Sis
Investigators Inc
Mechanicsville, MD 20659, (301) 290-0525 T & M Investigations
11400 Urieville Ln, Worton, MD 21678, (410) 348-2333 Harford
County Crime Solvers
2220 Ady Rd, Bel Air, MD 21014, (410) 877-7867 Flagship
Elkridge, MD 21075, (410) 712-5003 Flagship
Ellicott City, MD 21043, (410) 720-0977 Stay Protective Services
7900 Old Branch Ave, Clinton, MD 20735, (301) 868-5707 Security
Pros
104 S Parke St, Aberdeen, MD 21001, (410) 272-8601 Absec Security
Inc
3604 Annapolis Rd, Halethorpe, MD 21227, (443) 773-0146 |
