Subcontracting opportunities: NAICS 561621, Security Systems Services (except Locksmiths)
20 prime contractors held small business subcontracting plans on 101 federal security systems services (except locksmiths) contracts (NAICS 561621) in FY2022–FY2024, worth $584M including options. Only primes that aren't small businesses need these plans, and each one sets goals for work the prime gives to small businesses, so these are the companies looking for small subcontractors in this industry.
- Primes with plans
- 20
- Plan contracts
- 101
- Agencies
- 12
- Total value
- $584M
A free account shows the primes that subcontract 561621 work in your state and the small businesses they hire.
Primes with subcontracting plans in 561621
Most plan contracts first. “Recent subcontracts” counts the subcontracts each prime reported among the 298 most recent reports in this code.
| Prime contractor | Plan contracts | Value | Main agencies | Recent subcontracts |
|---|---|---|---|---|
| M. C. Dean, Inc.Tysons, VA | 24 | $72.2M | Federal Aviation Administration, U.S. Marshals Service+2 more | 111$41.5M |
| Triple Canopy, Inc.Herndon, VA | 20 | $83M | Office of Procurement Operations | — |
| Versar Security Systems, LLCSpringfield, VA | 11 | $27.9M | Federal Aviation Administration | — |
| Serco Inc.Herndon, VA | 9 | $155M | Department of the Navy | 77$53.2M |
| Xator LLCReston, VA | 7 | $30.9M | Department of the Air Force | 5$2.3M |
| Paragon Systems, Inc.Herndon, VA · part of Securitas Ab | 4 | $49.4M | Office of Procurement Operations | — |
| Johnson Controls Fire Protection LPBoca Raton, FL | 4 | $8.1M | Department of the Navy, Animal and Plant Health Inspection Service | — |
| CACI International IncArlington, VA | 3 | $79.6M | Department of the Air Force | 30$6.7M |
| Johnson Controls Security Solutions LLCAlexandria, VA | 3 | $12.7M | Office of the Comptroller of the Currency, Centers for Disease Control and Prevention+1 more | — |
| Srctec, LLCSyracuse, NY · part of SRC Inc. | 3 | $9.3M | Department of the Air Force | — |
| BCF Solutions, Inc.Chantilly, VA | 2 | $14M | Department of the Air Force | — |
| Low Voltage Wiring, LTDColorado Springs, CO | 2 | $7.6M | Department of the Air Force | — |
| Simplexgrinnell LPNorfolk, VA · part of Johnson Controls Fire Protection LP | 2 | $4M | Department of the Navy | — |
| Advanced Technology Systems Company, Inc. (of Virginia)McLean, VA | 1 | $19.4M | Department of the Air Force | — |
| Johnson Controls Building Automation Systems, LLCRockville, MD | 1 | $3.3M | Department of the Air Force | 5$426K |
| Johnson Controls, Inc.Milwaukee, WI | 1 | $2.6M | Department of Veterans Affairs | — |
| Securityhunter, Inc.Windsor Mill, MD | 1 | $1.7M | Washington Headquarters Services (WHS) | — |
| Kastle Systems LLCFalls Church, VA | 1 | $1.4M | Small Business Administration | — |
| Cynergy Professional Systems LLCLaguna Hills, CA | 1 | $1.3M | Department of Veterans Affairs | — |
| Siemens Building Technologies Incorporated (2488)Buffalo Grove, IL · part of Siemens Industry Inc. | 1 | $1.2M | Department of Veterans Affairs | — |
Recent subcontracts to small businesses
Of the 298 most recent subcontracts primes reported under NAICS 561621 since Oct 2, 2024, 112 went to small businesses, worth $33.2M.
| Date | Small business | Prime | Amount |
|---|---|---|---|
| Aug 25, 2026 | G & C Equipment CorporationCA | M. C. Dean, Inc.Washington Headquarters Services | $170K |
| Aug 6, 2026 | Sterling Computers CorporationSD | M. C. Dean, Inc.Washington Headquarters Services | $54.5K |
| Jul 27, 2026 | Seigel Communications Service LLCMN | M. C. Dean, Inc.U.S. Marshals Service | $415K |
| Jul 17, 2026 | Sterling Computers CorporationSD | M. C. Dean, Inc.Washington Headquarters Services | $96.8K |
| Jul 14, 2026 | August Schell Enterprises, Inc.MD | General Dynamics Mission Systems, Inc.Department of the Navy | $64.5K |
| Jul 10, 2026 | Govsmart, Inc.VA | General Dynamics Mission Systems, Inc.Department of the Navy | $57.7K |
| Jul 3, 2026 | Tex/Am Construction Co., Inc.MD | Ptsi Managed Services IncSmithsonian Institution | $1.8M |
| Jun 12, 2026 | Sterling Computers CorporationSD | M. C. Dean, Inc.Washington Headquarters Services | $199K |
| May 27, 2026 | G & C Equipment CorporationCA | M. C. Dean, Inc.Washington Headquarters Services | $190K |
| May 12, 2026 | Sterling Computers CorporationSD | KBR Wyle Services, LLCU.S. Marshals Service | $65.3K |
| May 6, 2026 | Intellimar IncMD | M. C. Dean, Inc.Washington Headquarters Services | $180K |
| May 5, 2026 | Skyland Cyber LLCVA | M. C. Dean, Inc.Federal Aviation Administration | $40.5K |
| May 5, 2026 | Skyland Cyber LLCVA | M. C. Dean, Inc.Washington Headquarters Services | $78.3K |
| Apr 27, 2026 | Sterling Computers CorporationSD | M. C. Dean, Inc.Washington Headquarters Services | $335K |
| Apr 14, 2026 | Orion Security Solutions LLCOK | M. C. Dean, Inc.Federal Aviation Administration | $2.2M |
| Mar 26, 2026 | Orion Security Solutions LLCOK | M. C. Dean, Inc.Federal Aviation Administration | $1.1M |
| Feb 13, 2026 | Red Heritage Media LLCSC | Chickasaw Service Solutions, LLCDepartment of Energy | $165K |
| Jan 26, 2026 | Trivad, Inc.CA | Xator CorporationDepartment of the Air Force | $41.9K |
| Jan 12, 2026 | Sterling Computers CorporationSD | M. C. Dean, Inc.Washington Headquarters Services | $74K |
| Dec 18, 2025 | Technology Industries IncVA | M. C. Dean, Inc.Washington Headquarters Services | $119K |
| Dec 17, 2025 | Skyland Cyber LLCVA | M. C. Dean, Inc.Washington Headquarters Services | $312K |
| Dec 10, 2025 | Skyland Cyber LLCVA | M. C. Dean, Inc.Washington Headquarters Services | $48.8K |
| Dec 10, 2025 | G & C Equipment CorporationCA | M. C. Dean, Inc.Washington Headquarters Services | $125K |
| Nov 5, 2025 | Orion Security Solutions LLCOK | M. C. Dean, Inc.Federal Aviation Administration | $270K |
| Oct 27, 2025 | Technical Electric Systems IncFL | M. C. Dean, Inc.Federal Aviation Administration | $688K |
Small businesses winning these subcontracts
- Sterling Computers Corporation, SD: 11 subcontracts, $1.7M
- G & C Equipment Corporation, CA: 9 subcontracts, $2M
- Skyland Cyber LLC, VA: 6 subcontracts, $901K
- Ldia Holdings, LLC, TX: 6 subcontracts, $748K
- Orion Security Solutions LLC, OK: 4 subcontracts, $5.3M
- Bowler Pons Solutions Consultants, LLC, MD: 4 subcontracts, $3.3M
- Intellimar Inc, MD: 4 subcontracts, $2.3M
- Trivad, Inc., CA: 4 subcontracts, $496K
- Thundercat Technology, LLC, VA: 4 subcontracts, $111K
- G2IT, LLC, MD: 3 subcontracts, $360K
- Iron Bow Technologies, LLC, VA: 3 subcontracts, $274K
- Astic Signals Defenses L.L.C., MD: 2 subcontracts, $3.3M
- Dal Media Solutions Inc., AZ: 2 subcontracts, $2.9M
- Olgoonik Global Security, LLC., AK: 2 subcontracts, $517K
- Alutiiq Information Management, LLC, AK: 2 subcontracts, $420K
Which agencies
| Agency | Plan contracts | Value |
|---|---|---|
| Office of Procurement Operations | 26 | $134M |
| Federal Aviation Administration | 22 | $49.1M |
| Department of the Air Force | 20 | $171M |
| Department of the Navy | 14 | $166M |
| U.S. Marshals Service | 10 | $42.1M |
| Department of Veterans Affairs | 3 | $5.1M |
| Centers for Disease Control and Prevention | 1 | $8.5M |
| Departmental Offices | 1 | $3.4M |
| Washington Headquarters Services (WHS) | 1 | $1.7M |
| Small Business Administration | 1 | $1.4M |
Where the work is
Virginia (44), Michigan (11), District of Columbia (9), New York (6), California (6), Georgia (4), Colorado (4), New Jersey (3), Pennsylvania (3), Florida (2), and 8 more.
How to win subcontracts with these primes
- Register in the prime's supplier portal. Most large primes have one, usually under “supplier diversity” or “small business programs” on their website. Buyers search it when they need a subcontractor, so list your NAICS codes, certifications and past work.
- Contact the small business liaison officer. Every prime with a plan names someone to run it. Find them through the supplier portal, or for defense primes in DoD's prime contractor directory. Send a one-page capability statement that names the contracts and agencies you can support.
- Watch SBA's SubNet. Primes post subcontracting solicitations and sources sought notices on SubNet.
- Be easy to vet. Keep your SAM.gov registration active and check that you count as small under 561621's size standard. Certifications such as 8(a), HUBZone, WOSB and SDVOSB count toward the prime's goals, which makes you more valuable to them.
- Get free help. APEX Accelerators introduce small businesses to primes and run matchmaking events. Our guide to becoming a government subcontractor covers the rest.
More on 561621: open contracts and top small-business winners and contracts ending in the next 12 months. Primes also post subcontracting opportunities on SBA's SubNet.
Frequently asked questions
What is a small business subcontracting plan?
Under FAR 19.702, a large business that wins a federal contract over $900,000 ($2 million for construction) with subcontracting possibilities must agree to a plan with goals for subcontracting to small businesses, including small disadvantaged, women-owned, HUBZone and service-disabled veteran-owned firms. The prime reports its progress twice a year in eSRS. Contracts awarded before October 2025 used the older $750,000 and $1.5 million thresholds.
How do I become a subcontractor to these 561621 primes?
Register in the prime's supplier portal (most large primes have one, often called supplier diversity or small business programs), keep your SAM.gov registration active, and send the prime's small business liaison officer a capability statement that names the contracts and agencies you can support. Primes need small subcontractors to meet their plan goals, so being easy to find and easy to vet matters.
Where does this data come from?
Primes and their plan contracts come from SBA's Directory of Federal Government Prime Contractors with Subcontracting Plans for FY2022–FY2024, which is drawn from FPDS. Recent subcontracts come from the subaward reports primes file on USAspending.gov (most subcontracts over $30,000 on prime contracts over $750,000 must be reported). A subcontractor is shown as a small business when it has an active SAM.gov registration as small under at least one NAICS code, or an SBA certification.
Source: SBA's directory of prime contractors with subcontracting plans (FY2022–FY2024, from FPDS) and USAspending.gov subaward reports. Contact names are never shown. Values are base plus all options, not what has been paid.