# NAICS 561621 Security Systems Services: $2.3B, page 8

Updated November 6, 2026.

Incumbents: the largest recipients, 351 to 400 of 1,514, in the same order as page 1.

## The full list

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- [Federal contract awards under NAICS 561621 Security Systems Services (except Locksmiths)](https://specstream.ai/data/federal-awards/naics/561621-security-systems-services-except-locksmiths): 7,802 rows, fiscal years 2024 to 2027, from the USAspending.gov award archive of 2026-11-06; the 7,802 awards that name their recipient (the page total of 8,184 also counts awards to sole proprietorships and to entities that opted out, which no list holds), $158.02, or the new rows each week for $19 a month. Buy: https://specstream.ai/data/federal-awards/naics/561621-security-systems-services-except-locksmiths

SpecStream is the live web data engine for teams and agents. It reads every federal contract award on USAspending.gov and every open opportunity on SAM.gov, and this page is that reading. Ask for the awards in your niche and the winners, agencies, values and recompetes arrive in your sheet, CRM, Slack or agent as they are reported.

## Incumbents: the largest recipients, page 8

| Recipient | Business size | Awards | Obligated | Share |
| --- | --- | --- | --- | --- |
| [MCQ INC.](https://specstream.ai/data/federal-awards/recipient/mcq-inc-rh38dvlrt2n6) | Small Business | 1 | $291,040 | 0.0% |
| [LINEV SYSTEMS US INC](https://specstream.ai/data/federal-awards/recipient/linev-systems-us-inc-x3r4rlx59dn7) | Other Than Small Business | 3 | $290,500 | 0.0% |
| [SECURITY INSTALL SOLUTIONS, INC.](https://specstream.ai/data/federal-awards/recipient/security-install-solutions-inc-cpp4de5n8jl3) | Small Business | 6 | $290,285 | 0.0% |
| KIDWELL INC | Other Than Small Business | 1 | $288,345 | 0.0% |
| NEXGEN INTEGRATION LLC | Small Business | 1 | $287,358 | 0.0% |
| [YUKON FIRE PROTECTION SERVICES, INC.](https://specstream.ai/data/federal-awards/recipient/yukon-fire-protection-services-inc-jawtgx9mcdj6) | Small Business | 7 | $284,885 | 0.0% |
| [CLUSTER TECHNOLOGY GROUP LLC](https://specstream.ai/data/federal-awards/recipient/cluster-technology-group-llc-dd53dw1gyej4) | Small Business | 1 | $283,105 | 0.0% |
| [MCCLELLAN BUSINESS PARK LLC](https://specstream.ai/data/federal-awards/recipient/mcclellan-business-park-llc-s858mq4d6mt8) | Other Than Small Business | 1 | $278,769 | 0.0% |
| [FIRE PROTECTION SERVICE INC](https://specstream.ai/data/federal-awards/recipient/fire-protection-service-inc-d54bjp927kn6) | Small Business | 7 | $278,675 | 0.0% |
| [HCI SERVICES INC](https://specstream.ai/data/federal-awards/recipient/hci-services-inc-erezdxwnfgv8) | Small Business | 1 | $277,620 | 0.0% |
| [HONEYWELL INTERNATIONAL INC.](https://specstream.ai/data/federal-awards/recipient/honeywell-international-inc-ls9feceecdm3) | Other Than Small Business | 1 | $277,276 | 0.0% |
| [RAE SECURITY SOUTHWEST, LLC](https://specstream.ai/data/federal-awards/recipient/rae-security-southwest-llc-d767y5c58m86) | Other Than Small Business | 1 | $277,106 | 0.0% |
| EMMATY-BAY, LLC | Small Business | 1 | $276,604 | 0.0% |
| [TARPAN CONSTRUCTION, LLC](https://specstream.ai/data/federal-awards/recipient/tarpan-construction-llc-sahpq57gpkk4) | Small Business | 1 | $275,381 | 0.0% |
| [COSCO FIRE PROTECTION, INC.](https://specstream.ai/data/federal-awards/recipient/cosco-fire-protection-inc-q5qlxf39fww3) | Other Than Small Business | 3 | $268,057 | 0.0% |
| [ONE CORPS, INC.](https://specstream.ai/data/federal-awards/recipient/one-corps-inc-c8gtcgeh37f8) | Small Business | 4 | $267,743 | 0.0% |
| [TRANSFORMATIONAL SECURITY, LLC](https://specstream.ai/data/federal-awards/recipient/transformational-security-llc-j5unncetdz24) | Other Than Small Business | 7 | $266,894 | 0.0% |
| [INTRAWORKS INC](https://specstream.ai/data/federal-awards/recipient/intraworks-inc-dmyakrcebjp6) | Small Business | 2 | $266,451 | 0.0% |
| [USIDC, INC.](https://specstream.ai/data/federal-awards/recipient/usidc-inc-mk4djur4cbc3) | Small Business | 2 | $263,187 | 0.0% |
| [US DIVERSIFIED CONTRACTING SERVICES INC.](https://specstream.ai/data/federal-awards/recipient/us-diversified-contracting-services-inc-xphfmkskjgy3) | Small Business | 1 | $260,697 | 0.0% |
| [ENTEGRITY CONSULTING GROUP, LLC](https://specstream.ai/data/federal-awards/recipient/entegrity-consulting-group-llc-l2nsnldyfxk5) | Small Business | 1 | $259,945 | 0.0% |
| [PALADIN TECHNOLOGIES (USA) INC.](https://specstream.ai/data/federal-awards/recipient/paladin-technologies-usa-inc-s2kddthhjmn9) | Other Than Small Business | 2 | $257,825 | 0.0% |
| [KINGFISHER CO., INC.](https://specstream.ai/data/federal-awards/recipient/kingfisher-co-inc-pxcqy2wlfrq3) | Small Business | 2 | $257,595 | 0.0% |
| [PC VISION INC](https://specstream.ai/data/federal-awards/recipient/pc-vision-inc-ll23g3m997d5) | Small Business | 1 | $256,190 | 0.0% |
| [COMMUNICATIONS ENGINEERING COMPANY](https://specstream.ai/data/federal-awards/recipient/communications-engineering-company-pub9jhn8mnk4) | Other Than Small Business | 3 | $254,573 | 0.0% |
| [TECHNICAL SYSTEMS GROUP, INC.](https://specstream.ai/data/federal-awards/recipient/technical-systems-group-inc-nk4hlfe12rg8) | Small Business | 2 | $254,127 | 0.0% |
| [APEX INTEGRATED SECURITY SOLUTIONS, LLC](https://specstream.ai/data/federal-awards/recipient/apex-integrated-security-solutions-llc-m625nlqypj43) | Small Business | 3 | $253,811 | 0.0% |
| [VISION QUEST SOLUTIONS INC](https://specstream.ai/data/federal-awards/recipient/vision-quest-solutions-inc-mna3ef2hhke5) | Small Business | 5 | $252,527 | 0.0% |
| [ADVANCED SECURITY CONTRACTORS INC](https://specstream.ai/data/federal-awards/recipient/advanced-security-contractors-inc-r3axe7n6pzb3) | Small Business | 3 | $251,104 | 0.0% |
| [KOORSEN FIRE & SECURITY INC](https://specstream.ai/data/federal-awards/recipient/koorsen-fire-security-inc-dgk9ln2yhbw1) | Other Than Small Business | 2 | $250,495 | 0.0% |
| [SECURITY ENGINEERING OF PENSACOLA INC](https://specstream.ai/data/federal-awards/recipient/security-engineering-of-pensacola-inc-cthjjdtkfkn7) | Small Business | 6 | $249,670 | 0.0% |
| [LONE STAR COMMUNICATIONS INC](https://specstream.ai/data/federal-awards/recipient/lone-star-communications-inc-lddkzge6h9p3) | Other Than Small Business | 1 | $249,309 | 0.0% |
| [DAVIS-ULMER SPRINKLER COMPANY, INC.](https://specstream.ai/data/federal-awards/recipient/davis-ulmer-sprinkler-company-inc-nhlabgl1uvj3) | Other Than Small Business | 1 | $248,076 | 0.0% |
| [PREFERRED ELECTRIC, LLC](https://specstream.ai/data/federal-awards/recipient/preferred-electric-llc-dfgxfly7um41) | Small Business | 1 | $244,300 | 0.0% |
| [CARE SECURITY SYSTEMS INC.](https://specstream.ai/data/federal-awards/recipient/care-security-systems-inc-eprlkjhbdjh5) | Small Business | 3 | $242,594 | 0.0% |
| [SHANIX, INC.](https://specstream.ai/data/federal-awards/recipient/shanix-inc-jqnvuelyrdl6) | Small Business | 1 | $240,000 | 0.0% |
| [CIRCUIT-TRON CORP](https://specstream.ai/data/federal-awards/recipient/circuit-tron-corp-lk4vxs3trja6) | Small Business | 2 | $239,788 | 0.0% |
| [PROTECTION TECHNOLOGIES, INC.](https://specstream.ai/data/federal-awards/recipient/protection-technologies-inc-e6j8hjckmjs8) | Small Business | 1 | $238,392 | 0.0% |
| [MOOG MILITARY AIRCRAFT LLC](https://specstream.ai/data/federal-awards/recipient/moog-military-aircraft-llc-hnq9pdgkg744) | Other Than Small Business | 2 | $237,985 | 0.0% |
| [MTNT TECHNICAL SERVICES, LLC](https://specstream.ai/data/federal-awards/recipient/mtnt-technical-services-llc-hb9enlxek8r7) | Small Business | 1 | $236,559 | 0.0% |
| [EAG OF AMERICAS, INC.](https://specstream.ai/data/federal-awards/recipient/eag-of-americas-inc-nv9fjdyjmce5) | Small Business | 1 | $235,500 | 0.0% |
| [BLUE NOSE IT SOLUTIONS, INC](https://specstream.ai/data/federal-awards/recipient/blue-nose-it-solutions-inc-mezejwpnef67) | Small Business | 3 | $233,952 | 0.0% |
| [ENHANCED AWARENESS INC](https://specstream.ai/data/federal-awards/recipient/enhanced-awareness-inc-ldrqteh5xnj4) | Small Business | 1 | $232,870 | 0.0% |
| [CORPORACION ALVARADO CASTILLO, S.A. DE C.V.](https://specstream.ai/data/federal-awards/recipient/corporacion-alvarado-castillo-s-a-de-c-v-vtvezey35kg7) | Other Than Small Business | 5 | $230,684 | 0.0% |
| [AXIS GLOBAL ENTERPRISES, INC.](https://specstream.ai/data/federal-awards/recipient/axis-global-enterprises-inc-gae3bqfcpwm5) | Small Business | 5 | $230,282 | 0.0% |
| [OMEGA BELT BUILT CONSTRUCTION SERVICES JV, LLC](https://specstream.ai/data/federal-awards/recipient/omega-belt-built-construction-services-jv-llc-s2l9zaw4bgn6) | Small Business | 1 | $229,177 | 0.0% |
| [G4S SECURE SOLUTIONS (GUAM), INC.](https://specstream.ai/data/federal-awards/recipient/g4s-secure-solutions-guam-inc-lx58w5hm8k83) | Other Than Small Business | 1 | $226,790 | 0.0% |
| [ATS INTEGRATED SOLUTIONS, INC](https://specstream.ai/data/federal-awards/recipient/ats-integrated-solutions-inc-wkd1y8npth36) | Other Than Small Business | 2 | $226,744 | 0.0% |
| UNITED AUTOMATION LLC | Small Business | 1 | $225,681 | 0.0% |
| [BRAND CONSTRUCTION LLC](https://specstream.ai/data/federal-awards/recipient/brand-construction-llc-jn8rp53dj577) | Small Business | 2 | $222,285 | 0.0% |

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Source: [USAspending.gov](https://www.usaspending.gov/download_center/award_data_archive). 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 2026-11-06; 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](https://creativecommons.org/licenses/by/4.0/).