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Operational Test and Training Infrastructure (OTTI) Commercial Solutions Opening (CSO)

Issued by DEPT OF DEFENSE · DEPT OF THE AIR FORCE · FA2553 OPRN TEST & TRG INFR OTTI PK · via SAM.gov — US federal contract opportunities

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Published
8 Oct 2026
Closes
9 Dec 2029, 06:59 UTC
Reference
FA2553-25-S-C001
Location
CO, United States
Sector
Research, Studies & Evaluation

At a glance

DEPT OF DEFENSE · DEPT OF THE AIR FORCE · FA2553 OPRN TEST & TRG INFR OTTI PK in United States has published a tender in research, studies & evaluation: “Operational Test and Training Infrastructure (OTTI) Commercial Solutions Opening (CSO)”. Submissions close on 9 December 2029, 1152 days from today. Quote reference FA2553-25-S-C001 in any correspondence with the buyer. There are 76 open research, studies & evaluation notices in United States on FreeTender. Bids are submitted to the buyer through SAM.gov — US federal contract opportunities, not through FreeTender.

Details

DEPT OF DEFENSE · DEPT OF THE AIR FORCE · FA2553 OPRN TEST & TRG INFR OTTI PK is soliciting Operational Test and Training Infrastructure (OTTI) Commercial Solutions Opening (CSO). Solicitation number FA2553-25-S-C001. Classified under NAICS 541715 — Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology). Product/service code AC34 — R&D- DEFENSE SYSTEM: SHIPS (ENGINEERING DEVELOPMENT). Place of performance: CO, USA. Responses are due by 09 December 2029 06:59 UTC. Posted on SAM.gov, the US federal contract opportunities system; registration is required to bid.

Amendment 0011: Please see the attached OTTI CSO FA2553-25-S-C001 Amend 0011. This amendment supersedes all versions of the OTTI CSO.

Annual Notice: In accordance with DFARS 212.7004(b), this posting serves as an annual notice of the OTTI CSO FA2553-25-S-C001 publishing.

Amendment 0010: Please see the attached OTTI CSO FA2553-25-S-C001 Amend 0010. This amendment supersedes all versions of the OTTI CSO.

AOI 05 Q&As: Please see the attached OTTI CSO AOI 05 Questions_Answers document for AOI 05: Continuous Fitness Assessment (CFA). The Phase I submission accepted until date for AOI 05 has been extended from 7 November 2025 to 5 December 2025.

Amendment 0009: Please see the attached OTTI CSO FA2553-25-S-C001 Amend 0009. This amendment supersedes all versions of the OTTI CSO.

AOI 05: Continuous Fitness Assessment (CFA) is currently pending Government updates. Additional information will be released to industry via an amendment to this solicitation. The Phase I submission accepted until date for AOI 05 has been extended from 8 October 2025 to 7 November 2025.

Amendment 0008: Please see the attached OTTI CSO FA2553-25-S-C001 Amend 0008. This amendment supersedes all versions of the OTTI CSO.

Amendment 0007: Please see the attached OTTI CSO FA2553-25-S-C001 Amend 0007. This amendment supersedes all versions of the OTTI CSO.

Amendment 0006: Please see the attached OTTI CSO FA2553-25-S-C001 Amend 0006. This amendment supersedes all versions of the OTTI CSO.

AOI 04 Q&As Rev 01: Please see the attached (CUI) OTTI CSO AOI 04 - Questions_Answers_Rev 01 document for AOI 04: Multirole Satellite Frequency In-field Test Suite (MSFITS). This updated document provides additional questions and answers (AOI 04 - Q16 through AOI 04 - Q30).

Amendment 0005: Please see the attached OTTI CSO FA2553-25-S-C001 Amend 0005. This amendment supersedes all versions of the OTTI CSO.

AOI 04 Q&As: Please see the attached (CUI) OTTI CSO AOI 04 Questions_Answers document for AOI 04: Multirole Satellite Frequency In-field Test Suite (MSFITS).

Amendment 0004: Please see the attached OTTI CSO FA2553-25-S-C001 Amend 0004. This amendment supersedes all versions of the OTTI CSO.

Amendment 0003: Please see the attached OTTI CSO FA2553-25-S-C001 Amend 0003. This amendment supersedes all versions of the OTTI CSO.

AOI 02 Q&As Rev 01: Please see the attached OTTI CSO AOI 02 Questions_Answers_Rev01 document for AOI 02: National Space Test and Training Complex (NSTTC) Range Control System Enhancements. This updated document provides an additional question and answer (AOI 02 - Q10). AOI 03 Q&As: Please see the attached OTTI CSO AOI 03 Questions_Answers document for AOI 03: Distributed Synthetic Training Environment Evolution & Prototyping. AOI 02 Q&As: Please see the attached OTTI CSO AOI 02 Questions_Answers document for AOI 02: National Space Test and Training Complex (NSTTC) Range Control System Enhancements.

Amendment 0002: Please see the attached OTTI CSO FA2553-25-S-C001 Amend 0002. This amendment supersedes all versions of the OTTI CSO.

Amendment 0001: Please see the attached OTTI CSO FA2553-25-S-C001 Amend 0001. This amendment supersedes all versions of the OTTI CSO.

The United States Space Force (USSF) Operational Test and Training Infrastructure (OTTI) is seeking innovative capabilities, solutions, and technological advancements. The OTTI Commercial Solutions Opening (CSO) is being issued in accordance with Defense Federal Acquisition Regulation Supplement (DFARS) 212.70. OTTI is requesting submissions from interested Offerors in response to the specific Areas of Interest (AOI) identified in the OTTI CSO. Please see the attached OTTI CSO FA2553-25-S-C001 for all information.

Context for bidders

There are 76 open Research, Studies & Evaluation tenders in United States. This one closes in 1152 days.

Before you bid on this tender

A quick checklist to help you decide whether to bid and prepare a compliant submission for this research, studies & evaluation opportunity. Always verify the details on the official source.

  • Confirm the exact closing date and time (and time zone) on the official portal — deadlines are strict and can be revised by a corrigendum.
  • Read the full notice and every attached document, including the scope, specifications and any bill of quantities or terms of reference.
  • Check the eligibility criteria — prior similar experience, annual turnover, certifications and registrations — and make sure you qualify before investing effort.
  • Prepare any earnest-money deposit (EMD) or bid security and the required formats early; missing or wrongly-formatted documents are a common cause of rejection.
  • Note how bids must be submitted (online or physical), in what format, and whether a digital signature or portal registration is required.
  • Watch for corrigenda and clarifications right up to the deadline — requirements and dates can change.
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