Special notice
Tracking Layer Tranche 4 On-orbit Demonstrations and Operations Request for Information
SDA-SN-27-0003
Department of the Air Force, Department of Defense. Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology).
Response deadline
December 4, 2026 at 12:00 PM EST
Closed in 33 days. Posted October 20, 2026, first published October 20, 2026. Scheduled to archive December 19, 2026.
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Description
As published on SAM.gov.
The Space Development Agency (SDA) is seeking information to inform future solicitations and reduce risk associated with the Proliferated Warfighter Space Architecture (PWSA) architecture acquisition and integration plans. This RFI seeks industry feedback on enhancements to its baseline Tracking Layer’s Resilient MWTD mission payloads and architecture, as well as new mission capabilities that can help the PWSA provide enhanced mission performance to detect and track more challenging targets across their full flight trajectories. Additional details, mission objectives, and architecture information are available upon request.
Responses to this RFI will specifically inform SDA’s scope and design of possible short-term on-orbit demonstration(s) and future Tracking Layer tranches. Following this RFI and feedback phase, SDA plans to announce a Tranche 4 solicitation that includes both production contracts and partnership opportunities for rapid prototyping and flight demonstration(s) of new mission payloads.
This Request for Information consists of Controlled Unclassified Information (CUI) and a classified addendum. Interested parties must contact SDA to receive the documents. Please send an email to ussf.pentagon ussf.pentagon.sda.mesg.sda-sn-27-0003-mbx@mail.mil with the subject line “TRKT4 RFI Content Request.” Please include:
• Company Name:
• Cage Code:
• City, State of Company location
• Email address:
• JWICS email: (for classified documents)
Publications
Every notice SAM.gov issued under this solicitation number, oldest first. Each is a separate record on SAM.
October 20, 2026
Special notice
Due December 4, 2026 at 12:00 PM EST. SAM.gov, notice 1cd13b7660ee43ff96fe549144d7b847
2 revisions on SAM
- October 20, 2026: publish, special notice
- October 20, 2026: publish, special notice
October 20, 2026
Special notice
Due December 4, 2026 at 12:00 PM EST. SAM.gov, notice 8c9ac33ec6434df3a707e489c3d6ff5a
2 revisions on SAM
- October 20, 2026: publish, special notice
- October 20, 2026: publish, special notice
Points of contact
- Contracting officeussf.pentagon.sda.mesg.sda-sn-27-0003-mbx@mail.mil