| Xator LLC | Centreville | VA | $2.97B |
| LDRM LLC | Herndon | VA | $528M |
| Johnson Controls Security Solutions LLC | Alexandria | VA | $254M |
| Chenega Security International, LLC | Chantilly | VA | $224M |
| Leidos Security Detection & Automation, Inc. | Tewksbury | MA | $185M |
| Signet Technologies, Inc. | Columbia | MD | $163M |
| Securityhunter, Inc. | Windsor Mill | MD | $158M |
| LHDTSV LLC | Herndon | VA | $128M |
| Evigilant.com, LLC | Manassas | VA | $125M |
| Integrated Security Technologies, Inc. | Herndon | VA | $108M |
| Lockwood Hills Federal LLC | Herndon | VA | $103M |
| Minuteman Security Solutions LLC | Lorton | VA | $78.9M |
| Red Peak Technical Services, LLC | Anchorage | AK | $78.6M |
| Hurtvet Subcontracting, Inc. | Heber City | UT | $75.7M |
| Versar Security Systems, LLC | Washington | DC | $75.4M |
| Scdatacom, LLC | Savannah | GA | $71M |
| Media Plumbing & Heating Inc. | Broomall | PA | $65M |
| Trofholz Technologies, Inc. | Sacramento | CA | $58M |
| Wyandotte Technologies | Wyandotte | OK | $57.4M |
| Ameriguard Security Systems, Inc. | Fresno | CA | $44.4M |
| Cherokee Federal Solutions, L.L.C. | Tulsa | OK | $35.8M |
| Trilogy Secured Services, L.L.C | Springfield | VA | $35.7M |
| Electronic Systems Services Inc. | Springtown | TX | $32.2M |
| Tic Security, LLC | Rockville | MD | $29M |
| Veterans Fire And Life Safety Corporation | Saint Peters | MO | $27.9M |
| Convergint Technologies LLC | Hoffman Estates | IL | $27.8M |
| LS3 Inc. | Crofton | MD | $25.7M |
| Systems Engineering Inc. | Sterling | VA | $19M |
| Integrated Security Technologies Inc. | Waipahu | HI | $18.1M |
| Gonzales Consulting Services Inc. | Greenwood Village | CO | $18.1M |
| Diamond Security, Inc. | Windsor Mill | MD | $17.8M |
| Total-evergreen JV LLC | Tacoma | WA | $15.5M |
| Security Install Solutions, Inc. | Centennial | CO | $14.9M |
| Kastle Systems LLC | Falls Church | VA | $14.2M |
| Condortech Services, Inc. | Chantilly | VA | $13.9M |
| Starboard Industries LLC | Monroe | MI | $13.2M |
| Global Grab Technologies, Inc. | Franklin | TN | $12.4M |
| Active Security Consulting LLC | Sterling | VA | $11.2M |
| Vindicator Technologies, Inc. | Austin | TX | $10.5M |
| Eagle Fire Inc. | North Chesterfield | VA | $10.1M |
| Cam-dex Corporation | Kansas City | KS | $9.77M |
| Muscogee Asset Protection, LLC | Okmulgee | OK | $9.62M |
| Security2000 LLC | Brick | NJ | $8.67M |
| Digitronics, Inc. | Herndon | VA | $8.66M |
| Point Security Inc. | Lexington | NC | $8.53M |
| M3T Corporation | Mechanicsburg | PA | $8.37M |
| Aes Systems Inc. | Springville | UT | $8.3M |
| Nitor Technologies Inc. | Silver Spring | MD | $7.52M |
| Delta Run Security JV2 LLC | Anchorage | AK | $7.44M |
| Secsol Inc. | Los Alamitos | CA | $6.94M |
| Je Systems Inc. | Pocola | OK | $6.84M |
| Security Operations Group International LLC | Spring Branch | TX | $6.83M |
| Scott Total Security Limited | Stonehouse | | $6.55M |
| Citizen Contracting Group LLC | Tulsa | OK | $6.03M |
| Halo X Ray Technologies Limited | Nottingham | | $5.98M |
| Inter-pacific Inc. | Buffalo Grove | IL | $5.84M |
| Applied Security Technologies Inc. | Cypress | TX | $5.71M |
| Tech Electronics, Inc. | Saint Louis | MO | $5.6M |
| Securadyne Systems Intermediate LLC | Dallas | TX | $5.34M |
| Cameron Strategic Management LLC | Belton | TX | $5.25M |
| Control Concepts LLC | Clinton | MS | $5.17M |
| Integrity Protection Systems LLC | Sassamansville | PA | $5.03M |
| Executive Technologies Corporation | Summerville | SC | $4.87M |
| Clear Cloud Solutions Inc. | Upland | CA | $4.73M |
| Hei Security LLC | West Valley City | UT | $4.72M |
| 3M Electric LLC | Springdale | AR | $4.63M |
| Intertech Security, LLC | Pittsburgh | PA | $4.59M |
| Rb Allen Co. Inc. | North Hampton | NH | $4.49M |
| Securitas Technology Corporation | Uniontown | OH | $4.43M |
| Everon, LLC | Boca Raton | FL | $4.42M |
| Reconview LLC | Locust | NC | $4.37M |
| XRT, LLC | Spicewood | TX | $4.36M |
| Smart Defense LLC | Kyiv | | $4.34M |
| Liveview Technologies Inc. | American Fork | UT | $4.07M |
| Rock Creek Logistics, Technology, & Management Business Solutions LLC | Potomac | MD | $4.03M |
| Sector Security Group Technology | Ramallah | | $3.98M |
| Sk Shieldus Co. Ltd. | Seongnam-si | | $3.89M |
| Securitas Electronic Security, Inc. | Uniontown | OH | $3.79M |
| Government Contracting Services LLC | Tacoma | WA | $3.78M |
| Transmit Security Inc. | Boston | MA | $3.61M |
| Apogee CFS, LLC | Corpus Christi | TX | $3.59M |
| Kingfisher Co. Inc. | Lowell | MA | $3.53M |
| Security & Energy Technologies Corporation | Chantilly | VA | $3.49M |
| Quality CCTV Systems, Inc. | North Chesterfield | VA | $3.48M |
| MTNT-SSC Security JV LLC | Anchorage | AK | $3.47M |
| Fire-x Corporation Of Virginia | Henrico | VA | $3.46M |
| Drake Consulting LLC | Garden Valley | ID | $3.28M |
| Security Information Systems, LLC | Orlando | FL | $3.24M |
| Locurrent Systems, LLC | Cooperstown | NY | $3.17M |
| High Tech Innovation Corp. | Coolin | ID | $3.13M |
| Viking Security LLC | Orlando | FL | $3.13M |
| Sesanti Limited | Andover | | $2.9M |
| Datawatch Systems, Inc. | Bethesda | MD | $2.81M |
| Resolute Partners, L.L.C. | Cheshire | CT | $2.81M |
| Homefront Security LLC | Manorville | NY | $2.79M |
| Dal Media Solutions Inc. | Black Canyon City | AZ | $2.78M |
| Warrior Outdoor LLC | Anchorage | AK | $2.73M |
| Pass, L.L.C | Fairview Heights | IL | $2.7M |
| Silent Partner Security Systems, Inc. | Marshall | VA | $2.69M |
| Ws Insight K Ltd. | Nairobi | | $2.58M |
