Data / Federal awards / NAICS 561621
NAICS 561621 Security Systems Services (except Locksmiths): $2.3 billion in federal contracts to 1,506 recipients (FY2024 to FY2027)
Federal agencies obligated $2.3 billion under NAICS 561621, Security Systems Services (except Locksmiths), across 8,087 contract awards to 1,506 named recipients in fiscal years 2024 to 2027. The largest recipients are M. C. DEAN, INC. ($316.3 million), SERCO INC ($305.7 million), PARAGON SYSTEMS INC ($151.2 million). Department of Defense is the largest buyer with $1.2 billion. 23 opportunities under this code are open on SAM.gov now.
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- NAICS code
- 561621 Security Systems Services (except Locksmiths)
- Contract awards
- 8,087
- Obligated
- $2.3 billion
- Named recipients
- 1,506
- Buying agencies
- 58
- Small business share of obligations
- 31%
- Full and open competition share
- 66%
- Set aside share
- 15%
- Latest action
- 2026-10-04
Open opportunities in this niche
The same code on SAM.gov, read each morning: 23 opportunities you can still respond to.
Incumbents: the largest recipients
Ranked by dollars obligated in fiscal years 2024 to 2027.
| Recipient | Business size | Awards | Obligated | Share |
|---|---|---|---|---|
| M. C. DEAN, INC. | Other Than Small Business | 579 | $316.3 million | 13.8% |
| SERCO INC | Other Than Small Business | 20 | $305.7 million | 13.3% |
| PARAGON SYSTEMS INC | Other Than Small Business | 15 | $151.2 million | 6.6% |
| JOHNSON CONTROLS SECURITY SOLUTIONS LLC | Other Than Small Business | 765 | $103.2 million | 4.5% |
| CACI INTERNATIONAL INC | Other Than Small Business | 6 | $100 million | 4.4% |
| GENERAL DYNAMICS MISSION SYSTEMS, INC. | Other Than Small Business | 5 | $96.4 million | 4.2% |
| TRIPLE CANOPY INC | Other Than Small Business | 37 | $65.5 million | 2.9% |
| JOHNSON CONTROLS BUILDING AUTOMATION SYSTEMS, LLC | Other Than Small Business | 243 | $60.3 million | 2.6% |
| ADVANCED TECHNOLOGY SYSTEMS COMPANY, INC. (OF VIRGINIA) | Small Business | 4 | $45.7 million | 2.0% |
| XATOR LLC | Other Than Small Business | 16 | $43.2 million | 1.9% |
| SCDATACOM, LLC | Small Business | 71 | $41.8 million | 1.8% |
| CHENEGA INTEGRATED SECURITY SOLUTIONS, LLC | Small Business | 14 | $37.9 million | 1.7% |
| BIRDI SYSTEMS, INC. | Other Than Small Business | 5 | $35.5 million | 1.5% |
| VERSAR SECURITY SYSTEMS, LLC | Other Than Small Business | 154 | $27.6 million | 1.2% |
| MEDIA PLUMBING & HEATING INC | Small Business | 149 | $24.5 million | 1.1% |
| JOHNSON CONTROLS FIRE PROTECTION LP | Other Than Small Business | 184 | $21.1 million | 0.9% |
| FIRST COAST SECURITY SOLUTIONS, INC. | Other Than Small Business | 10 | $19.1 million | 0.8% |
| OLGOONIK SOLUTIONS LLC | Small Business | 2 | $19.1 million | 0.8% |
| KBR WYLE SERVICES, LLC | Other Than Small Business | 1 | $18.9 million | 0.8% |
| ELECTRONIC SYSTEMS SERVICES INC | Small Business | 3 | $17.1 million | 0.7% |
| HURTVET SUBCONTRACTING, INC. | Small Business | 46 | $15.5 million | 0.7% |
| TROFHOLZ TECHNOLOGIES, INC. | Other Than Small Business | 56 | $14.4 million | 0.6% |
| SIEMENS INDUSTRY INC | Other Than Small Business | 73 | $13.4 million | 0.6% |
| EVERGREEN FIRE ALARMS LLC | Other Than Small Business | 86 | $13.3 million | 0.6% |
| INDYNE, INC | Other Than Small Business | 3 | $12 million | 0.5% |
| SMITHS DETECTION INC. | Other Than Small Business | 17 | $11.8 million | 0.5% |
| VETERANS FIRE AND LIFE SAFETY CORPORATION | Small Business | 29 | $10.6 million | 0.5% |
| SRCTEC, LLC | Other Than Small Business | 6 | $10.6 million | 0.5% |
| PTSI MANAGED SERVICES INC | Other Than Small Business | 17 | $10.5 million | 0.5% |
| TOTAL-EVERGREEN JV LLC | Small Business | 9 | $9.5 million | 0.4% |
| XTEC, INCORPORATED | Other Than Small Business | 7 | $9 million | 0.4% |
| GLOBAL RESOURCE SOLUTIONS INC | Small Business | 14 | $9 million | 0.4% |
| CONDORTECH SERVICES, INC. | Small Business | 50 | $9 million | 0.4% |
| VISTA DEFENSE TECHNOLOGIES, LLC | Small Business | 1 | $8.9 million | 0.4% |
| JOHNSON CONTROLS, INC | Other Than Small Business | 30 | $8.8 million | 0.4% |
| CHEROKEE NATION SYSTEM SOLUTIONS LLC | Small Business | 11 | $8.7 million | 0.4% |
| GONZALES CONSULTING SERVICES INC | Small Business | 2 | $8.3 million | 0.4% |
| CYNERGY PROFESSIONAL SYSTEMS LLC | Small Business | 39 | $8.1 million | 0.4% |
| INTEGRATED SECURITY TECHNOLOGIES INC. | Small Business | 34 | $7.9 million | 0.3% |
| HQE SYSTEMS, INC. | Small Business | 46 | $7.5 million | 0.3% |
| ADVANTOR SYSTEMS II LLC | Other Than Small Business | 41 | $7.1 million | 0.3% |
| ELECTRIPRO, INC. | Small Business | 13 | $7 million | 0.3% |
| WARFEATHER, LLC | Small Business | 24 | $7 million | 0.3% |
| DIGITRONICS, INC. | Small Business | 83 | $6.9 million | 0.3% |
| ECHELON SERVICES, LLC | Small Business | 14 | $6.5 million | 0.3% |
| AKAMAI INTELLIGENCE LLC | Small Business | 1 | $6.4 million | 0.3% |
| SYSTEMS ENGINEERING INC | Small Business | 10 | $6.3 million | 0.3% |
| RED PEAK TECHNICAL SERVICES, LLC | Small Business | 3 | $6.2 million | 0.3% |
| BOWHEAD PROTECTION & SECURITY SERVICES LLC | Small Business | 4 | $6.2 million | 0.3% |
| KASTLE SYSTEMS LLC | Small Business | 76 | $5.8 million | 0.3% |
Agencies buying under this code
| Agency | Awards | Obligated | Largest recipient |
|---|---|---|---|
| Department of Defense | 2,813 | $1.20 billion | SERCO INC |
| Department of Homeland Security | 871 | $357.6 million | PARAGON SYSTEMS INC |
| Department of Justice | 816 | $167.1 million | M. C. DEAN, INC. |
| Department of Veterans Affairs | 982 | $151.2 million | HURTVET SUBCONTRACTING, INC. |
| Department of Transportation | 321 | $125.7 million | M. C. DEAN, INC. |
| Department of Health and Human Services | 175 | $53.2 million | BIRDI SYSTEMS, INC. |
| Department of the Treasury | 144 | $36.8 million | ELECTRONIC SYSTEMS SERVICES INC |
| Securities and Exchange Commission | 12 | $35.7 million | CHENEGA INTEGRATED SECURITY SOLUTIONS, LLC |
| Department of the Interior | 505 | $25.6 million | ONERAIN INCORPORATED |
| Department of Energy | 17 | $21.7 million | OLGOONIK SOLUTIONS LLC |
| Department of State | 687 | $16.7 million | MISCELLANEOUS FOREIGN AWARDEES |
| Department of Commerce | 97 | $12.8 million | CONDORTECH SERVICES, INC. |
| General Services Administration | 140 | $12.1 million | KASTLE SYSTEMS LLC |
| Smithsonian Institution | 26 | $11 million | PTSI MANAGED SERVICES INC |
| Social Security Administration | 24 | $10 million | GONZALES CONSULTING SERVICES INC |
| Department of Agriculture | 162 | $8.9 million | FIRELAKE CONSTRUCTION INC |
| U.S. Agency for Global Media | 11 | $8.8 million | XTEC, INCORPORATED |
| Government Accountability Office | 36 | $5.1 million | VERSAR SECURITY SYSTEMS, LLC |
| Federal Trade Commission | 6 | $5.1 million | THE FIELDS GROUP, LLC |
| Office of Personnel Management | 9 | $3.9 million | KR CONTRACTING INC |
| Department of Education | 34 | $3.8 million | JOHNSON CONTROLS SECURITY SOLUTIONS LLC |
| Agency for International Development | 13 | $3.4 million | USMAX CORPORATION |
| Department of Housing and Urban Development | 11 | $3.1 million | ECHELON SERVICES, LLC |
| Nuclear Regulatory Commission | 2 | $3 million | PUYENPA SERVICES, LLC |
| Peace Corps | 2 | $1 million | SIGNET TECHNOLOGIES, INC. |
Obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2024 | $804.2 million |
| FY2025 | $783.9 million |
| FY2026 | $698.2 million |
| FY2027 | $5.1 million |
Products and services bought
| Code | Product or service | Awards | Obligated |
|---|---|---|---|
| 6350 | Miscellaneous Alarm, Signal, and Security Detection Systems | 1,527 | $439.4 million |
| J063 | Maint/repair/rebuild of Equipment- Alarm, Signal, and Security Detection Systems | 1,732 | $399.6 million |
| J059 | Maint/repair/rebuild of Equipment- Electrical and Electronic Equipment Components | 112 | $341.6 million |
| S206 | Housekeeping- Guard | 83 | $270.7 million |
| N063 | Installation of Equipment- Alarm, Signal, and Security Detection Systems | 1,519 | $263.3 million |
| R499 | Support- Professional: Other | 110 | $100 million |
| 5810 | Communications Security Equipment and Components | 155 | $60.6 million |
| J012 | Maint/repair/rebuild of Equipment- Fire Control Equipment | 282 | $59.3 million |
| R430 | Support- Professional: Physical Security and Badging | 132 | $56.6 million |
| R425 | Support- Professional: Engineering/technical | 37 | $17.3 million |
Largest contract awards
| Award ID | Recipient | Agency | Type | NAICS | What it buys | Obligated in window | Award value | Starts | Ends | Place of performance | Source |
|---|---|---|---|---|---|---|---|---|---|---|---|
| N3943026F0002 | SERCO INC | Department of Defense | Delivery Order | 561621 | THE PURPOSE OF THIS TASK ORDER IS TO AWARD THE ANNUAL SUSTAINMENT OF PUBLIC SAFETY SYSTEMS (PSS) FOR FY26 TO CNIC LOCATIONS WORLDWIDE. | $101,189,996 | $101,189,996 | November 21, 2025 | December 1, 2026 | Port Hueneme Cbc Base, CA | usaspending.gov |
| N0003024C1001 | GENERAL DYNAMICS MISSION SYSTEMS, INC. | Department of Defense | Definitive Contract | 561621 | FY24 PM, SYS ENG, & BUSINESS MGMT | $92,137,531 | $82,155,977 | January 15, 2024 | January 14, 2027 | Pittsfield, MA | usaspending.gov |
| N6426724F4035 | SERCO INC | Department of Defense | Delivery Order | 561621 | GLOBAL SUSTAINMENT OF PSS SYSTEMS | $81,420,874 | $81,420,874 | December 2, 2023 | January 1, 2025 | Herndon, VA | usaspending.gov |
| 70RFPW25FRW900036 | PARAGON SYSTEMS INC | Department of Homeland Security | Delivery Order | 561621 | ARMED PROTECTIVE SECURITY OFFICER (PSO) SERVICES FOR LOS ANGELES, CALIFORNIA AND SURROUNDING AREAS TASK ORDER AWARD FOR OPTION YEAR 3 | $57,152,340 | $57,152,340 | October 1, 2025 | September 30, 2026 | Los Angeles, CA | usaspending.gov |
| N3943025F0024 | SERCO INC | Department of Defense | Delivery Order | 561621 | THE PURPOSE OF THIS TASK ORDER IS TO REISSUE N6426725F6103 AS N3943025F0024 WITH ASSOCIATED CLINS. ALL TASK ORDER TERMS AND CONDITIONS IN AC | $47,248,384 | $91,394,570 | April 30, 2025 | March 1, 2026 | Port Hueneme Cbc Base, CA | usaspending.gov |
| N6426725F6103 | SERCO INC | Department of Defense | Delivery Order | 561621 | COMMANDER, NAVY INSTALLATIONS COMMAND (CNIC)PUBLIC SAFETY SYSTEMS (PSS) PROGRAM GLOBAL SUSTAINMENT FY25. | $44,146,186 | $91,394,570 | December 2, 2024 | December 1, 2025 | Herndon, VA | usaspending.gov |
| FA873022C0017 | ADVANCED TECHNOLOGY SYSTEMS COMPANY, INC. (OF VIRGINIA) | Department of Defense | Definitive Contract | 561621 | EGYPTIAN ARMAMENT AUTHORITY (EAA) MOBILE SURVEILLANCE SENSOR SECURITY (MS3) SYSTEM PHASE II | $40,229,158 | $115,888,125 | December 21, 2021 | December 31, 2027 | Mclean, VA | usaspending.gov |
| 70RFPW24FRW900046 | PARAGON SYSTEMS INC | Department of Homeland Security | Delivery Order | 561621 | ARMED PROTECTIVE SECURITY OFFICER (PSO) SERVICES FOR LOS ANGELES, CA AND THE SURROUNDING AREAS RECURRING SERVICES - OPTION YEAR 2 BASE AWARD | $38,229,501 | $38,229,501 | October 1, 2024 | September 30, 2025 | Los Angeles, CA | usaspending.gov |
| FA238125FB008 | CACI INTERNATIONAL INC | Department of Defense | Delivery Order | 561621 | PROVIDE TECHNICAL AND MANAGEMENT SUPPORT TO MAINTAIN CONTINUOUS IN-THEATER OPERATIONAL READINESS OF USAFE-AFAFRICA AND USAFCENT EXPEDITIONAR | $36,749,659 | $36,856,659 | April 2, 2025 | July 24, 2026 | Turkey | usaspending.gov |
| 15M10624FA47MA008 | M. C. DEAN, INC. | Department of Justice | Delivery Order | 561621 | 4003 ELECTRONIC SECURITY SYSTEM REPAIR NATIONWIDE DRAW DOWN BASED ON THE AVAILABILITY OF FY24 FUNDS | $36,446,263 | $36,446,263 | February 5, 2024 | October 26, 2026 | Mclean, VA | usaspending.gov |
| FA873023F0009 | CACI INTERNATIONAL INC | Department of Defense | Delivery Order | 561621 | INTEGRATED BASE DEFENSE SECURITY SYSTEM (IBDSS) NEXT - UNITED STATES ARMED FORCES EUROPE (USAFE) REGION | $35,603,432 | $53,404,027 | December 16, 2022 | May 31, 2028 | Chantilly, VA | usaspending.gov |
| 70RFPW23FRW900027 | PARAGON SYSTEMS INC | Department of Homeland Security | Delivery Order | 561621 | ARMED PROTECTIVE SECURITY OFFICER (PSO) SERVICES THROUGHOUT LOS ANGELES, CA AND SURROUNDING AREAS AWARD FOR FY24 RECURRING SERVICES - NON-SO | $33,677,109 | $36,425,783 | October 1, 2023 | September 30, 2024 | Los Angeles, CA | usaspending.gov |
| FA873023F0006 | M. C. DEAN, INC. | Department of Defense | Delivery Order | 561621 | INTEGRATED BASE DEFENSE SECURITY SYSTEM (IBDSS) NEXT - WESTERN REGION | $32,947,354 | $47,866,416 | February 10, 2023 | February 1, 2028 | Mclean, VA | usaspending.gov |
| FA873023F0007 | XATOR LLC | Department of Defense | Delivery Order | 561621 | INTEGRATED BASE DEFENSE SECURITY SYSTEM (IBDSS) NEXT - EASTERN REGION | $32,889,357 | $59,692,474 | January 6, 2023 | June 4, 2028 | Manassas, VA | usaspending.gov |
| 50310223F0199 | CHENEGA INTEGRATED SECURITY SOLUTIONS, LLC | Securities and Exchange Commission | BPA Call | 561621 | PROTECTIVE SERVICES (ARMED AND UNARMED GUARD SERVICES) FOR OSS | $32,877,504 | $42,246,426 | September 25, 2023 | September 24, 2028 | Washington, DC | usaspending.gov |
| FA873023F0008 | JOHNSON CONTROLS BUILDING AUTOMATION SYSTEMS, LLC | Department of Defense | Delivery Order | 561621 | INTEGRATED BASE DEFENSE SECURITY SYSTEM (IBDSS) NEXT - CENTRAL REGION | $31,013,494 | $44,647,082 | February 9, 2023 | February 9, 2027 | Rockville, MD | usaspending.gov |
| HQ003422F0031 | M. C. DEAN, INC. | Department of Defense | Delivery Order | 561621 | FORCE PROTECTION TECHNOLOGY SUPPORT SERVICES | $26,855,748 | $49,927,847 | December 17, 2021 | December 16, 2026 | Washington, DC | usaspending.gov |
| HQ003422F0029 | M. C. DEAN, INC. | Department of Defense | Delivery Order | 561621 | INTEGRATED SECURITY SERVICES CONTRACT (ISSC4) TO PROVIDE A TOTAL SYSTEM APPROACH FOR INTEGRATED ELECTRONIC AND PHYSICAL SECURITY SYSTEMS. | $24,072,564 | $44,712,658 | December 17, 2021 | December 16, 2026 | Washington, DC | usaspending.gov |
| FA873022F0038 | CACI INTERNATIONAL INC | Department of Defense | Delivery Order | 561621 | U.S. AIR FORCES CENTRAL COMMAND (USAFCENT) OPERATIONAL READINESS SUPPORT IV PROJECT | $18,915,000 | $51,883,863 | April 1, 2022 | May 31, 2025 | Chantilly, VA | usaspending.gov |
| DTFAWA17C00040 | KBR WYLE SERVICES, LLC | Department of Transportation | Definitive Contract | 561621 | IGF::OT::IGF | $18,879,216 | $61,768,424 | August 29, 2017 | April 10, 2026 | North Charleston, SC | usaspending.gov |
| 70RFPW26FRW900017 | FIRST COAST SECURITY SOLUTIONS, INC. | Department of Homeland Security | Delivery Order | 561621 | ARMED PROTECTIVE SECURITY OFFICER (PSO) SERVICES FOR LOS ANGELES, CALIFORNIA AND SURROUNDING AREAS BASE AWARD FOR RECURRING SERVICES. | $18,768,229 | $21,732,428 | October 1, 2026 | August 31, 2027 | Los Angeles, CA | usaspending.gov |
| 75F40125F19003 | BIRDI SYSTEMS, INC. | Department of Health and Human Services | Delivery Order | 561621 | MDI/SOFTWARE HOUSE SECURITY INSTALLATION AND MAINTENANCE - TASK ORDER 3 | $18,146,675 | $18,146,675 | August 15, 2025 | January 27, 2027 | Beltsville, MD | usaspending.gov |
| 89243321CAU000003 | OLGOONIK SOLUTIONS LLC | Department of Energy | Definitive Contract | 561621 | TECHNICAL, TRAINING, ADMINISTRATIVE, ANALYTICAL, INSPECTION AND EQUIPMENT SUPPORT FOR OFFICE OF THE ASSOCIATE UNDER SECRETARY FOR ENVIRONMEN | $16,707,331 | $36,876,116 | March 22, 2021 | November 2, 2026 | Washington, DC | usaspending.gov |
| 70RFPW24FRW900045 | PARAGON SYSTEMS INC | Department of Homeland Security | Delivery Order | 561621 | ARMED PROTECTIVE SECURITY OFFICER (PSO) SERVICES THROUGHOUT LOS ANGELES, CALIFORNIA AND THE SURROUNDING AREAS BASE AWARD FOR SOCIAL SECURITY | $16,432,321 | $16,432,321 | October 1, 2024 | September 30, 2025 | Los Angeles, CA | usaspending.gov |
| 2031ZA24C00298 | ELECTRONIC SYSTEMS SERVICES INC | Department of the Treasury | Definitive Contract | 561621 | WCF SECURITY EQUIPMENT & DEVICES OPERATIONS AND MAINTENANCE (O&M) | $16,153,120 | $20,870,730 | June 1, 2024 | May 31, 2027 | Fort Worth, TX | usaspending.gov |
Updated October 6, 2026. Read from USAspending.gov. Public U.S. federal spending data (U.S. Department of the Treasury). Obligations are the contract actions dated in fiscal years 2024 to 2027 of the USAspending.gov award archive of 2026-10-06; a contract's total value is its current value as USAspending reports it, including earlier years. Recipients are matched on their SAM.gov UEI, never on the name, and are shown as the government prints them. Sole proprietorships and opted-out entities count in the totals and are not named. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.