System Studies & Simulation, Inc.
Huntsville, AL Doing business as S3
- UEI
- Z5G7R7QDAYD9
- CAGE
- 0WYZ8
- Primary NAICS
- 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- SBA certifications
-
Women-Owned Small Business· Current
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
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- 332993 Ammunition (except Small Arms) Manufacturing
- 336411 Aircraft Manufacturing
- 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing
- 336414 Guided Missile and Space Vehicle Manufacturing
- 481211 Nonscheduled Chartered Passenger Air Transportation
- 481219 Other Nonscheduled Air Transportation
- 488190 Other Support Activities for Air Transportation
- 488999 All Other Support Activities for Transportation
Show all 29
- 493190 Other Warehousing and Storage
- 541219 Other Accounting Services
- 541330 Engineering Services
- 541380 Testing Laboratories and Services
- 541420 Industrial Design Services
- 541511 Custom Computer Programming Services
- 541512 Computer Systems Design Services
- 541519 Other Computer Related Services
- 541611 Administrative Management and General Management Consulting Services
- 541614 Process, Physical Distribution, and Logistics Consulting Services
- 541690 Other Scientific and Technical Consulting Services
- 541990 All Other Professional, Scientific, and Technical Services
- 561110 Office Administrative Services
- 561210 Facilities Support Services
- 561499 All Other Business Support Services
- 561612 Security Guards and Patrol Services
- 611430 Professional and Management Development Training
- 611512 Flight Training
- 611519 Other Technical and Trade Schools
- 611699 All Other Miscellaneous Schools and Instruction
- 928110 National Security
- Corporate family
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- Global Logistics Support Services Inc. · Huntsville, AL NKC9SK2L7NF3
- Kachemak Bay Flying Service Inc. · Huntsville, AL JSK9EBUN8HZ8
- S3 International, Inc. · Huntsville, AL QDZ6WM3T7NJ9
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- SAM.gov registration date
- Physical address
- 615 Discovery Dr NW, Huntsville, AL 35806, USA
- Website
- s3inc.com
- Founded
- 1991
- Employees
- 251-1K
- Estimated annual revenue
- $50M-$100M
- Industry
-
- Industrials
- Capital Goods
- Construction & Engineering
- Civil Engineering
- SIC code
- 87 Engineering & Management Services
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $39,354,642 |
| FY2025 | $39,453,852 |
| FY2024 | $34,341,279 |
| FY2023 | $28,717,533 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Army | $34,964,855 | |
| 2 | Air Force | $4,389,287 | |
| 3 | Missile Defense Agency | $500 |
Contract vehicles
- ASTRO
- Mission Oriented Business Integrated Services
- Multiple Award Schedule
- One Acquisition Solution for Integrated Services Plus - Total Small Business
- Responsive Strategic Sourcing for Services
- Scalable Homeland Innovative Enterprise Layered Defense
- Seaport Next Generation
- The Professional Services Schedule
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Contract subawards
| Prime contractor | Prime award | Amount | Awarded |
|---|---|---|---|
| Science Applications International Corporation | 47QFCA25F0032 | $2,000,000 | |
| Tryco Incorporated | 0461 | -$70,099 | |
| Lockheed Martin Corp | 0683 | -$57,190 | |
| Science Applications International Corporation | 47QFCA25F0009 | $813,866 | |
| Torch Technologies Inc. | W31P4Q19FC003 | -$31,062 |
Latest 5 listed here. See the rest on GovTribe.
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| Simtech | Huntsville, AL | 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) |
| Will Technology, Inc. | Huntsville, AL | 541330 Engineering Services |
| Avnik Defense Solutions Inc. | Huntsville, AL | 541330 Engineering Services |
| Logicore Corporation | Huntsville, AL | 541614 Process, Physical Distribution, and Logistics Consulting Services |
| Mssi | Huntsville, AL | 561210 Facilities Support Services |
About the company
System Studies & Simulation, Inc., doing business as S3, headquartered in Huntsville, Alabama, is an SBA-certified women-owned small business providing systems engineering, modeling and simulation, program management, technical analysis, and advisory services to the Department of Defense and other federal agencies as a prime contractor on 438 awards (90% of recent activity) and as a subcontractor on 50 awards.
S3's federal footprint reflects deep entrenchment in Army modernization and training programs. The top customers by award count are the Department of the Army National Guard Readiness Center (94 awards, $416.2 million combined potential value), the Department of the Army (65 awards, $36.6 million), and the Department of the Army Materiel Command Aviation and Missile Life Cycle Management Command (47 awards, $228.3 million), together accounting for 56% of the 488 awards in the portfolio. However, the top-five ranking by potential value diverges significantly: the Department of the Navy Naval Sea Systems Command anchors $76.51 billion across just 7 awards, and the Department of the Army Acquisition Support Center PEO Simulation, Training and Instrumentation carries $17.53 billion across 6 awards—together representing the lion's share of the portfolio's $134.57 billion combined potential value. This extreme concentration in two Navy and Army modernization vehicles creates both runway and recompete risk; only 3 awards worth $30 million combined complete in the next twenty-four months.
S3 operates across multiple named government-wide vehicles and agency-specific platforms. The Mission Oriented Business Integrated Services vehicle (MOBIS) carries 67 task orders worth $204.6 million, the GSA Multiple Award Schedule hosts 49 task orders worth $176.2 million, and the Federal Supply Schedule GS23F0254K carries 44 task orders worth $25.3 million. The vendor also holds positions on the Indefinite Delivery Contract W9133L05D0002 (33 task orders, $40.4 million) and The Professional Services Schedule (29 task orders, $71.5 million). Most significantly, S3 was awarded a multiple-award IDIQ under the Scalable Homeland Innovative Enterprise Layered Defense (SHIELD) program by the Missile Defense Agency on December 29, 2025, with a ceiling of $151 billion spanning ten years through December 2028. The SHIELD vehicle covers research and development, prototyping, systems engineering, weapon design, production, test and evaluation, cybersecurity, and modernization across air, missile, space, cyber, and hybrid threats. S3 also holds a position on the OASIS+ Total Small Business set-aside IDIQ (awarded December 19, 2024, base through December 18, 2029) and the ASTRO government-wide vehicle (both multiple-award IDIQs with placeholder ceiling values).
Recent prime work exemplifies S3's capability mix. A $48.1 million delivery order from the Air Education and Training Command (issued September 29, 2024, under GSA Multiple Award Schedule, running through September 28, 2029) provides aircrew maintenance and training services on a time-and-materials basis at Randolph Air Force Base, Texas. A $100.96 million delivery order from PEO Missiles and Space (issued March 16, 2023, under GSA Multiple Award Schedule, running through September 15, 2028) delivers technical support services to the Strategic and Operational Rockets and Missiles Project Office in Huntsville, Alabama, on a firm-fixed-price basis; SCI-reportable invoicing reached $12.9 million in FY2024 across 49.6 FTEs with 48% of hours subcontracted to 11 subcontractors. A $515,393 delivery order from PEO Missiles and Space (issued June 16, 2023, under GSA Multiple Award Schedule, running through December 15, 2028) supports programmatic services for strategic operational rockets and missiles; FY2024 invoicing hit $11.8 million across 15.4 FTEs on a $367.04/hr blended rate. Additionally, S3 serves as mentor under a $1.7 million cost-no-fee DoD Mentor Protégé contract awarded June 30, 2024, by the Office of the Secretary of Defense, supporting MacaLogic's capability development through September 29, 2027.
S3's subcontractor profile reveals deepening ties to larger defense primes, particularly Torch Technologies Inc., which accounts for the bulk of recent sub-awards dating from January 2024 onward. Under Torch, S3 delivers systems engineering, theoretical analyses, simulation and modeling, hardware design, software and algorithm development, and hardware fabrication in support of advanced missile guidance systems, multi-mode seekers, autonomous acquisition algorithms, and integrated sensor suites for the Army's Combat Capabilities Development Command Aviation and Missile Center and Weapons Development and Integration Directorate. S3 also subcontracts to Science Applications International Corporation on system software lifecycle engineering and capability development test and evaluation, and to Lockheed Martin on UH-72A helicopter maintenance and flight support.
Across SCI-reportable prime service contracts, S3 invoiced $48.4 million over FY2022–FY2024, with FY2024 alone reaching $24.7 million across 65.0 FTEs. The government-paid hourly rate spectrum on prime contracts spans a median of $110.28/hr with senior labor pricing reaching $270.20/hr at the 90th percentile, reflecting a mix of technical engineering and program management labor. On prime contracts captured in SCI, subcontractors account for an average of 31% of total contractor hours across 43 named subcontractors—a teaming profile indicating S3 builds substantial delivery teams while retaining core engineering and program management capacity in-house. The vendor's recent trajectory accelerated from 10 awards in 2021 to 34 in 2024, though this velocity reflects task-order issuance under large IDVs rather than new vehicle positions; the 15 awards in 2025 year-to-date continue that pattern.
S3's corporate structure includes three subsidiaries: S3 International, Inc., Global Logistics Support Services Inc., and Kachemak Bay Flying Service Inc., all subchapter S corporations. These entities may support specialized regional or functional capabilities within the S3 enterprise, though the source does not characterize their specific roles or service lines.
SBA capabilities narrative
Core Compentencies: Acquisition Support; Conference Coordination; Cost Analysis; Information Technology; Logistics; Modeling & Simulation; Programmatics; Strategic Planning; System Engineering; Technical Services; Test; Training.
Quick answers
Is System Studies & Simulation, Inc. registered in SAM.gov?
Yes. System Studies & Simulation, Inc.'s SAM.gov registration is active through November 24, 2026.
Which SBA certifications does System Studies & Simulation, Inc. hold?
System Studies & Simulation, Inc. holds Women-Owned Small Business certification from the SBA.
Which contract vehicles does System Studies & Simulation, Inc. hold?
System Studies & Simulation, Inc. holds a place on 15 federal contract vehicles, including ASTRO, MOBIS and MAS.
How much has System Studies & Simulation, Inc. received in federal contracts?
Federal contracts obligated $39,453,852 to System Studies & Simulation, Inc. in fiscal year 2025 and $141,867,307 in fiscal years 2023 through 2027.
How does System Studies & Simulation, Inc. rank among federal contractors?
System Studies & Simulation, Inc. ranked #42 in PSC U099 in FY2025.
What is System Studies & Simulation, Inc.'s most recent federal award?
System Studies & Simulation, Inc.'s most recent federal contract award is Scalable homeland innovative enterprise layered defense (shield) initial order (HQ085926FF024), from Missile Defense Agency, on December 29, 2025.
On GovTribe
See System Studies & Simulation, Inc.'s full federal record
- Federal contract awards
- IDV awards
- Contract vehicles
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
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