SDA seeks industry feedback for the final of three types of Tranche 2 Transport Layer (T2TL) space vehicles—T2TL Gamma. This draft program solicitation expands upon the foundation for Tranche 2 of the Proliferated Warfighter Space Architecture (PWSA) previously described in the T2TL Alpha and Beta solicitations.

SDA expects to procure approximately 20 T2TL Gamma space vehicles with a payload specifically designed to close future kill chains via the PWSA. The Gamma variant will share certain baseline characteristics with the other T2TL variants (Alpha and Beta) outlined in the RFP.

T2TL features multiple space vehicle and mission configuration variants procured through a multi-solicitation and multi-vendor acquisition approach. The initial launch capability is scheduled for September 2026.

The T2 Gamma draft program solicitation is comprised of unclassified solicitation documents as well as classified material on technical details of payload development. Per the program solicitation, interested offerors need to contact SDA to receive documents that contain Controlled Unclassified Information (CUI). To receive these additional solicitation documents please send an email to ussf.pentagon.sda.mbx.sda-sn-24-0008@mail.mil with the subject line “SDA T2 Gamma Solicitation Content Request.” Please include your organization’s CAGE code and location in your request, along with a JWICS email address if you would like to receive the classified package.

Amendment 1

Updated the draft solicitation to include information on the T2TL Gamma Industry Days by adding the following attachments:

1. T2TL Gamma Industry Day Announcement


2. T2TL Gamma Industry Day VAR Instructions