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| Company Name | Category | City | State | Availability | Action |
|---|---|---|---|---|---|
| AF Services, Inc. | staffing security services | Oak Brook | Illinois | Nationwide | |
| Summit Security Services | staffing security services | Nationwide | |||
| DITEK Corporation | staffing security services | Largo | Florida | Nationwide | |
| Dortronics Systems, Inc. | staffing security services | Sag Harbor | New York | Nationwide | |
| DTA Security Services | staffing security services | Las Vegas | Nevada | Nationwide | |
| Dugmore & Duncan Inc. | staffing security services | Hingham | Massachusetts | Nationwide | |
| Dynalock Corp. | staffing security services | Bristol | Connecticut | Nationwide | |
| E2 Optics | staffing security services | Englewood | Colorado | Nationwide | |
| Eagle Eye Networks | staffing security services | Austin | Texas | Nationwide | |
| Electric Guard Dog | staffing security services | Columbia | South Carolina | Nationwide | |
| Electronic Communications, Inc (ECI) | staffing security services | Bismarck | North Dakota | Nationwide | |
| Elika Access Systems | staffing security services | Irvine | California | Nationwide | |
| Elite Tactical Security Solutions | staffing security services | Henderson | Nevada | Nationwide | |
| Elk Products, Inc. | staffing security services | Hildebran | North Carolina | Nationwide | |
| Empire Security Services | staffing security services | Miami | Florida | Nationwide | |
| Enforce Security Services, Inc. | staffing security services | Houston | Texas | Nationwide | |
| ESICONVERGENT | staffing security services | Solon | Ohio | Nationwide | |
| Essex Electronics, Inc. | staffing security services | Carpinteria | California | Nationwide | |
| FAAC International | staffing security services | Rockledge | Florida | Nationwide | |
| Facekey Corporation | staffing security services | San Antonio | Texas | Nationwide | |
| Fast Guard Security Service | staffing security services | North Miami | Florida | Nationwide | |
| Federal Security Services Inc | staffing security services | Schwenksville | Pennsylvania | Nationwide | |
| FEIG Electronics | staffing security services | Duluth | Georgia | Nationwide | |
| Fidelity Security Agency, LLC | staffing security services | Orlando | Florida | Nationwide | |
| First American Security Services | staffing security services | Miami | Florida | Nationwide | |
| Force Security Solutions, LLC. | staffing security services | Manassas | Virginia | Nationwide | |
| FST Biometrics | staffing security services | New York | New York | Nationwide | |
| Garrett Metal Detectors | staffing security services | Garland | Texas | Nationwide | |
| GC & E Systems Group, Inc. | staffing security services | Peachtree Corners | Georgia | Nationwide | |
| Gibraltar | staffing security services | Marble Falls | Texas | Nationwide | |
| GJD USA Incorporated | staffing security services | El Monte | California | Nationwide | |
| Maloney Security, Inc. | staffing security services | West Coast | |||
| Glasser Security Group | staffing security services | Brooklyn | New York | Nationwide | |
| Global Elite Protection & Security | staffing security services | Miami | Florida | Nationwide | |
| Global Security Solutions, LLC | staffing security services | Denver | Colorado | Nationwide | |
| Grid Squared Systems | staffing security services | Long Island City | New York | Nationwide | |
| Guardian Zone, LLC | staffing security services | Irving | Texas | Nationwide | |
| Guidepost Solutions | staffing security services | New York | New York | Nationwide | |
| Hanwha Techwin America | staffing security services | Teaneck | New Jersey | Nationwide | |
| HauteSpot Networks Corp | staffing security services | Portland | Oregon | Nationwide | |
| Heightened-Security Inc. | staffing security services | New York | New York | Nationwide | |
| HES Staff | staffing security services | Orlando | Florida | Nationwide | |
| Highpower Security Products LLC | staffing security services | Meriden | Connecticut | Nationwide | |
| Hikvision USA Inc. | staffing security services | City of Industry | California | Nationwide | |
| Hoosier Security | staffing security services | Indianapolis | Indiana | Nationwide | |
| Hoverfly Technologies, Inc | staffing security services | Orlando | Florida | Nationwide | |
| HSI Sensing | staffing security services | Chickasha | Oklahoma | Nationwide | |
| IC Realtime Security Solutions | staffing security services | Pompano Beach | Florida | Nationwide | |
| ICS Protective Services | staffing security services | Hyattsville | Maryland | Nationwide | |
| ID Connection - a Division of IdentiSys | staffing security services | Eden Prairie | Minnesota | Nationwide | |
| ID Technology Partners | staffing security services | Gaithersburg | Maryland | Nationwide | |
| IDENTIV | staffing security services | Fremont | California | Nationwide | |
| Identytech Solutions America | staffing security services | Miami | Florida | Nationwide | |
| IDmachines LLC | staffing security services | Brookline | Massachusetts | Nationwide | |
| IDS Research and Development, Inc. | staffing security services | Tenafly | New Jersey | Nationwide | |
| IDTECK Global, Inc. | staffing security services | Gardena | California | Nationwide | |
| IMRON Corporation | staffing security services | Irvine | California | Nationwide | |
| IndigoVision Inc. | staffing security services | Edison | New Jersey | Nationwide | |
| Innovative Business Software, Inc. | staffing security services | Irving | Texas | Nationwide | |
| Integrated Command Software, Inc. | staffing security services | Houston | Texas | Nationwide | |
| Integrated Security Technologies Inc. | staffing security services | Herndon | Virginia | Nationwide | |
| International Guard Services | staffing security services | Houston | Texas | Nationwide | |
| Interstate Security Services Inc | staffing security services | Las Vegas | Nevada | Nationwide | |
| iOmniscient | staffing security services | Grand Island | New York | Nationwide | |
| IP Video Market | staffing security services | Bethlehem | Pennsylvania | Nationwide | |
| ipConfigure | staffing security services | Norfolk | Virginia | Nationwide | |
| Ipsidy | staffing security services | Long Beach | New York | Nationwide | |
| IPVideo Corp | staffing security services | Bay Shore | New York | Nationwide | |
| IronYun | staffing security services | Stamford | Connecticut | Nationwide | |
| ISSM PROTECTIVE SERVICES | staffing security services | Monsey | New York | Nationwide | |
| I-View Now | staffing security services | Las Vegas | Nevada | Nationwide | |
| Jensen Hughes | staffing security services | Baltimore | Maryland | Nationwide | |
| KapLogic | staffing security services | Littleton | Colorado | Nationwide | |
| Keep Your IP | staffing security services | Grand Terrace | California | Nationwide | |
| Keri Systems, Inc. | staffing security services | San Jose | California | Nationwide | |
| Imperial Events Security Services, LLC | staffing security services | Philadelphia | Pennsylvania | Nationwide | |
| Kevson Services Group | staffing security services | Frederick | Maryland | Nationwide | |
| KISI Inc. | staffing security services | Brooklyn | New York | Nationwide | |
| Knight Security Systems | staffing security services | Austin | Texas | Nationwide | |
| Kwikset | staffing security services | Lake Forest | California | Nationwide | |
| LaForce Inc. | staffing security services | Green Bay | Wisconsin | Nationwide | |
| Larrabee Ventures, Inc. | staffing security services | Sherman Oaks | California | Nationwide | |
| LCA Sales Company | staffing security services | Hawthorne | New York | Nationwide | |
| Lensec | staffing security services | Houston | Texas | Nationwide | |
| LGC Security, LLC | staffing security services | Washington | District of Columbia | Nationwide | |
| Lincoln Security Services, Llc. | staffing security services | Chicago | Illinois | Nationwide | |
| LiveView Technology | staffing security services | Orem | Utah | Nationwide | |
| LJ Alarm | staffing security services | Juneau | Alaska | Nationwide | |
| LockeyUSA | staffing security services | Mt. Pleasant | Michigan | Nationwide | |
| Louroe Electronics | staffing security services | Van Nuys | California | Nationwide | |
| M.A.R.C. Security | staffing security services | Ridgewood | New York | Nationwide | |
| M3T Corporation | staffing security services | Mechanicsburg | Pennsylvania | Nationwide | |
| MAGNASPHERE Corp. | staffing security services | Waukesha | Wisconsin | Nationwide | |
| Marksman Security | staffing security services | Orlando | Florida | Nationwide | |
| MAXxess Systems Inc. | staffing security services | Yorba Linda | California | Nationwide | |
| Mercury Security, LLC | staffing security services | Long Beach | California | Nationwide | |
| Metropol Security Services LLC | staffing security services | Houston | Texas | Nationwide | |
| e3 Personnel | staffing security services | Washington | District of Columbia | North East | |
| Minuteman Security Technologies, Inc. | staffing security services | Andover | Massachusetts | Nationwide | |
| staffing security services | Austin | Texas | Nationwide | ||
| Mobotix Corp. | staffing security services | New York | New York | Nationwide | |
| Monfort Electronics Marketing | staffing security services | Indianapolis | Indiana | Nationwide | |
| Monitoring America Alarm Co-op | staffing security services | Tulsa | Oklahoma | Nationwide | |
| Live Talent | staffing security services | Las Vegas | Nevada | Nationwide | |
| Morse Watchmans Inc | staffing security services | Oxford | Connecticut | Nationwide | |
| Positive Protection of Nevada LLC | staffing security services | Las Vegas | Nevada | Nationwide | |
| Multiguard Corporation | staffing security services | Indianapolis | Indiana | Nationwide | |
| NAPCO Security Technologies, Inc. | staffing security services | Amityville | New York | Nationwide | |
| National Monitoring Center | staffing security services | Lake Forest | California | Nationwide | |
| Network Harbor, Inc. | staffing security services | Bartonville | Illinois | Nationwide | |
| Nightingale Security | staffing security services | Newark | California | Nationwide | |
| Noice Industries | staffing security services | Torrance | California | Nationwide | |
| Nortek Security & Control | staffing security services | Carlsbad | California | Nationwide | |
| Northland Control Systems, Inc. | staffing security services | Milpitas | California | Nationwide | |
| Observables, Inc. | staffing security services | Santa Barbara | California | Nationwide | |
| 20-Minute Vacation LLC | staffing security services | San Francisco | California | Nationwide | |
| OffSite Vision Holdings, Inc. | staffing security services | Red Bank | New Jersey | Nationwide | |
| Oncam Grandeye | staffing security services | Billerica | Massachusetts | Nationwide | |
| OneEvent Technologies | staffing security services | Mt Horeb | Wisconsin | Nationwide | |
| OpenEye | staffing security services | Liberty Lake | Washington | Nationwide | |
| OPTEX, Inc. | staffing security services | Rancho Dominguez | California | Nationwide | |
| Overview Technologies,Inc. | staffing security services | Encino | California | Nationwide | |
| PinPoint Initiative, Inc | staffing security services | Manhasset | New York | Nationwide | |
| Platinum Protection LLC | staffing security services | Tampa | Florida | Nationwide | |
| Point Blank Security Services | staffing security services | Richardson | Texas | Nationwide | |
| Power Tech Business Solutions | staffing security services | Monroe | New York | Nationwide | |
| Preferred Technologies, Inc. | staffing security services | Houston | Texas | Nationwide | |
| Premiere Security, LLC | staffing security services | Derby | Kansas | Nationwide | |
| Prevent Security & Technology | staffing security services | New Castle | Delaware | Nationwide | |
| Princeton Identity | staffing security services | Hamilton | New Jersey | Nationwide | |
| Proactive Data Storage & Monitoring | staffing security services | Farmingdale | New York | Nationwide | |
| Pro-Secur | staffing security services | Doral | Florida | Nationwide | |
| Pro-Tec Design Inc. | staffing security services | Minnetonka | Minnesota | Nationwide | |
| Pro-Tect Security | staffing security services | Las Vegas | Nevada | Nationwide | |
| Proxy Technologies, Inc. | staffing security services | San Francisco | Califorrnia | Nationwide | |
| Quantum | staffing security services | San Jose | Califorrnia | Nationwide | |
| Rapid Response Monitoring Services, Inc. | staffing security services | Syracuse | New York | Nationwide | |
| Razberi Technologies, Inc. | staffing security services | Farmers Branch | Texas | Nationwide | |
| ReconaSense | staffing security services | Austin | Texas | Nationwide | |
| Regions Security Services, Inc. | staffing security services | Miami | Florida | Nationwide | |
| Reliable Security, LLC | staffing security services | Atlanta | Georgia | Nationwide | |
| Reliant Safety LLC | staffing security services | Everett | Washington | Nationwide | |
| Remo+ | staffing security services | Livermore | California | Nationwide | |
| Remote Tracking Systems, Inc. | staffing security services | Phoenix | Arizona | Nationwide | |
| Ring | staffing security services | Santa Monica | California | Nationwide | |
| Rocky T’s Inc | staffing security services | Las Vegas | Nevada | Nationwide | |
| ROG Security, Inc. | staffing security services | Walnut | California | Nationwide | |
| Rome Security | staffing security services | Las Vegas | Nevada | Nationwide | |
| Royal Protection & Security | staffing security services | Longwood | Florida | Nationwide | |
| RRA Security Services | staffing security services | Miami | Florida | Nationwide | |
| Sabre Integrated Security Systems, LLC | staffing security services | New York | New York | Nationwide | |
| Safety Technology International, Inc. | staffing security services | Waterford | Michigan | Nationwide | |
| Safeway Security Services | staffing security services | Lake Worth | Florida | Nationwide | |
| Salient Systems Corporation | staffing security services | Austin | Texas | Nationwide | |
| Secureamerica | staffing security services | Atlanta | Georgia | Nationwide | |
| SecureNet Technologies, LLC | staffing security services | Lake Mary | Florida | Nationwide | |
| Securitech Group, Inc | staffing security services | Maspeth | New York | Nationwide | |
| Security Brands, Inc. | staffing security services | Mesquite | Texas | Nationwide | |
| Security Camera Warehouse | staffing security services | Asheville | North Carolina | Nationwide | |
| Security Information Systems, Inc. (SIS) | staffing security services | Orlando | Florida | Nationwide | |
| Security Source | staffing security services | Wilmington | Massachusetts | Nationwide | |
| Security-Net Inc. | staffing security services | Exton | Pennsylvania | Nationwide | |
| Seldin Security Services | staffing security services | Chicago | Illinois | Nationwide | |
| Benchmark Electronics, Inc. | staffing security services | Tempe | Arizona | Nationwide | |
| Select Choice Security Services, LLC | staffing security services | Houston | Texas | Nationwide | |
| 1 Volt Associates, Inc. | staffing security services | Mechanicsville | Virginia | Nationwide | |
| Shomere Security Consultants | staffing security services | Orlando | Florida | Nationwide | |
| 16 Eagle Security & Armed Services LLC | staffing security services | Orlando | Florida | Nationwide | |
| SightLogix | staffing security services | Princeton | New Jersey | Nationwide | |
| 3SI Security Systems | staffing security services | Malvern | Pennsylvania | Nationwide | |
| Signal 88 Security | staffing security services | Omaha | Nebraska | Nationwide | |
| 3xLOGIC | staffing security services | Westminster | Colorado | Nationwide | |
| SilverShield, LLC | staffing security services | San Francisco | California | Nationwide | |
| 5 STAR Event Services | staffing security services | Houston | Texas | Nationwide | |
| Simmons Investigative & Security Agency, Inc | staffing security services | Hanover | Maryland | Nationwide | |
| 911 Consulting | staffing security services | Wilton | Connecticut | Nationwide | |
| Smart System Integrator Inc. | staffing security services | New York | New York | Nationwide | |
| A Services Group, LLC | staffing security services | Greenville | South Carolina | Nationwide | |
| Smarter Security, Inc. | staffing security services | Austin | Texas | Nationwide | |
| AACFP, LLC | staffing security services | Orlando | Florida | Nationwide | |
| SnapAV | staffing security services | Charlotte | North Carolina | Nationwide | |
| AASE LLC | staffing security services | Kissimmee | Florida | Nationwide | |
| South Florida Security Group | staffing security services | Miami | Florida | Nationwide | |
| AccessNsite | staffing security services | Santa Maria | California | Nationwide | |
| Southwest Microwave | staffing security services | Tempe | Arizona | Nationwide | |
| Twin City Security Denver | staffing security services | Denver | Colorado | Nationwide | |
| Admiral Security Services Inc | staffing security services | Miami | Florida | Nationwide | |
| Special Operations Associates, Inc. | staffing security services | Las Vegas | Nevada | Nationwide | |
| ADR Security | staffing security services | New York | New York | Nationwide | |
| Speco Technologies | staffing security services | Amityville | New York | Nationwide | |
| ADT | staffing security services | Boca Raton | Florida | Nationwide | |
| Stanley Security | staffing security services | Fishers | Indiana | Nationwide | |
| Advance Pro Security | staffing security services | North Miami Beach | Florida | Nationwide | |
| Stone Security Service | staffing security services | New York | New York | Nationwide | |
| Advanced Security Consulting, LLC | staffing security services | Burnsville | Minnesota | Nationwide | |
| Strategic Security Solutions | staffing security services | Raleigh | North Carolina | Nationwide | |
| AF Services | staffing security services | Oak Brook | Illinois | Nationwide | |
| T.E.F. Staffing Agency | staffing security services | Winter Park | Florida | Nationwide | |
| AFA Protective Systems, Inc. | staffing security services | Syosset | New York | Nationwide | |
| TotalSource Solutions Inc. | staffing security services | Stafford | Virginia | Nationwide | |
| Affiliated Monitoring | staffing security services | Union | New Jersey | Nationwide | |
| Trinity Event Staffing | staffing security services | Dallas | Texas | Nationwide | |
| Aiphone Corporation | staffing security services | Redmond | Washington | Nationwide | |
| Triton Security | staffing security services | Pompano Beach | Florida | Nationwide | |
| Alarm Monitoring Services, Inc. | staffing security services | Metairie & Monroe | Louisiana | Nationwide | |
| Trust Security & Fire Watch | staffing security services | Fort Washington | Maryland | Nationwide | |
| Alarm Relay | staffing security services | El Cajon | California | Nationwide | |
| Ultra Security Services | staffing security services | Orlando | Florida | Nationwide | |
| Alarm Systems, Inc. | staffing security services | Quincy | Illinois | Nationwide | |
| United American Security, LLC | staffing security services | Miami | Florida | Nationwide | |
| Alarm.com | staffing security services | Tysons | Virginia | Nationwide | |
| United Security Services, Inc. | staffing security services | Chicago | Illinois | Nationwide | |
| Alcatraz AI | staffing security services | Palo Alto | California | Nationwide | |
| Westex Security Services | staffing security services | Houston | Texas | Nationwide | |
| AlertEnterprise | staffing security services | Fremont | California | Nationwide | |
| Wireless CCTV LLC | staffing security services | Richardson | Texas | Nationwide | |
| All American Security Services | staffing security services | Miami | Florida | Nationwide | |
| WM Security Services, Inc | staffing security services | Houston | Texas | Nationwide | |
| All Systems | staffing security services | Kansas City | Kansas | Nationwide | |
| Alliance Monitoring Technologies, LLC | staffing security services | Shawnee | Kansas | Nationwide | |
| Alula | staffing security services | St. Paul | Minnesota | Nationwide | |
| AMAG Technology, Inc. | staffing security services | Torrance | California | Nationwide | |
| American System Integrators | staffing security services | Irvine | California | Nationwide | |
| Amulet Protective Technologies, Inc. | staffing security services | Scottsdale | Arizona | Nationwide | |
| Andy Frain | staffing security services | Aurora | Illinois | Nationwide | |
| AngelTrax | staffing security services | Dothan | Alabama | Nationwide | |
| Anixter | staffing security services | Glenview | Illinois | Nationwide | |
| APB Security | staffing security services | Jupiter | Florida | Nationwide | |
| a.p.i. Monitoring Inc. | staffing security services | Scottsdale | Arizona | Nationwide | |
| APL Access & Security, Inc. | staffing security services | Gilbert | Arizona | Nationwide | |
| Apollo Security | staffing security services | Newport Beach | California | Nationwide | |
| Arcules Inc. | staffing security services | Irvine | California | Nationwide | |
| Ariel Technologies | staffing security services | Las Cruces | New Mexico | Nationwide | |
| Armageddon Services | staffing security services | Chicago | Illinois | Nationwide | |
| Aronson Security Group | staffing security services | Renton | Washington | Nationwide | |
| ASAP Security Services | staffing security services | Houston | Texas | Nationwide | |
| Asymmetric Technologies, LLC | staffing security services | Columbus | Ohio | Nationwide | |
| Auglle, LLC | staffing security services | San Antonio | Texas | Nationwide | |
| Aventura Technologies, Inc. | staffing security services | Commack | New York | Nationwide | |
| Avistas | staffing security services | Irving | Texas | Nationwide | |
| Axis Global Enterprises Inc. / ASI Security | staffing security services | Virginia Beach | Virginia | Nationwide | |
| Twin City Security Houston | staffing security services | Houston | Texas | West | |
| Ayonix Face Technologies Inc. | staffing security services | Richmond | Virginia | Nationwide | |
| Badger Reps | staffing security services | Huntington Beach | California | Nationwide | |
| BAI Distributors, Inc. | staffing security services | Ocala | Florida | Nationwide | |
| BCDVideo | staffing security services | Buffalo Grove | Illinois | Nationwide | |
| Beau Dietl & Associates | staffing security services | New York | New York | Nationwide | |
| Bedrock Protection Agency | staffing security services | Salt Lake City | Utah | Nationwide | |
| Beta One Solutions, LLC | staffing security services | Savannah | Georgia | Nationwide | |
| BluB0X | staffing security services | Andover | Massachusetts | Nationwide | |
| Bolide Technology Group, Inc. | staffing security services | San Dimas | California | Nationwide | |
| brilong co | staffing security services | McKinney | Texas | Nationwide | |
| BRINKS Home Security | staffing security services | Dallas | Texas | Nationwide | |
| Brivo Inc. | staffing security services | Bethesda | Maryland | Nationwide | |
| Buffalo Armory | staffing security services | Buffalo | New York | Nationwide | |
| Building Intelligence Inc. | staffing security services | White Plains | New York | Nationwide | |
| Cambridge Security Services | staffing security services | Fort Lauderdale | Florida | Nationwide | |
| Camstar International, Inc. | staffing security services | Upland | California | Nationwide | |
| CBC AMERICA / Ganz Security | staffing security services | Torrance | California | Nationwide | |
| Century Security & Event Staffing, Inc. | staffing security services | Orlando | Florida | Nationwide | |
| Certipath | staffing security services | Reston | Virginia | Nationwide | |
| Champion National Security | staffing security services | Richardson | Texas | Nationwide | |
| CheckVideo | staffing security services | Falls Church | Virginia | Nationwide | |
| Chesapeake & Midlantic Marketing (MidChes) | staffing security services | Las Vegas | Nevada | Nationwide | |
| Cinch Systems, Inc. | staffing security services | St. Michael | Minnesota | Nationwide | |
| Clare Controls Inc | staffing security services | Sarasota | Florida | Nationwide | |
| Clinton Electronics Corporation | staffing security services | Loves Park | Illinois | Nationwide | |
| Coaxial Systems Associates | staffing security services | Palm Beach Gardens | Florida | Nationwide | |
| Code Blue Corporation | staffing security services | Holland | Michigan | Nationwide | |
| Colorado Security Agency | staffing security services | Washington | District of Columbia | Nationwide | |
| Comelit, USA | staffing security services | Monrovia, | California | Nationwide | |
| Commend, Inc. | staffing security services | Mahwah | New Jersey | Nationwide | |
| Condortech Services, Inc. | staffing security services | Fairfax | Virginia | Nationwide | |
| Contemporary Services Company | staffing security services | Los Angeles | California | Nationwide | |
| COPS Monitoring | staffing security services | Williamstown | New Jersey | Nationwide | |
| Core Brands LLC | staffing security services | Petaluma | California | Nationwide | |
| Costar Technologies, Inc. | staffing security services | Coppell | Texas | Nationwide | |
| Crotega, LLC | staffing security services | Minneapolis | Minnesota | Nationwide | |
| CrucialTrak | staffing security services | Houston | Texas | Nationwide | |
| Curtis Protective Services | staffing security services | Orlando | Florida | Nationwide | |
| Cyber adAPT, Inc. | staffing security services | Dallas | Texas | Nationwide | |
| CyberLock, Inc. | staffing security services | Corvallis | Oregon | Nationwide | |
| Cypress Integration Solutions | staffing security services | Lapeer | Michigan | Nationwide | |
| D.A.K. Companies | staffing security services | Miami | Florida | Nationwide | |
| Dahua Technology USA Inc. | staffing security services | Irvine | California | Nationwide | |
| Dakota Alert, Inc. | staffing security services | Elk Point | South Dakota | Nationwide | |
| DAQ Electronics | staffing security services | Piscataway | New Jersey | Nationwide | |
| Dedicated Micros, Inc. | staffing security services | Chantilly | Virginia | Nationwide | |
| deister electronic USA Inc. | staffing security services | Manassas | Virginia | Nationwide | |
| Denning Electronics | staffing security services | Batavia | Illinois | Nationwide | |
| Designed Security, Inc. | staffing security services | Bastrop | Texas | Nationwide | |
| Detex Corporation | staffing security services | New Braunfels | Texas | Nationwide | |
| DICE Corporation | staffing security services | Bay City | Michigan | Nationwide | |
| Digital Monitoring Products, Inc. | staffing security services | Springfield | Missouri | Nationwide |