Falcon 9 Block 5 | SDA Tranche 1 Tracking Layer A

Tranche 1 Tracking Layer A is one of five missions by the United States Space Force Space Development Agency (SDA) for the Proliferated Warfighter Space Architecture (PWSA) Tranche 1 Tracking Layer constellation, which will provide global indications, warning, tracking, and targeting of advanced missile threats, including hypersonic missile systems.

This mission is flown by SpaceX. It is classified as a government/top secret mission. Liftoff is planned from Space Launch Complex 4E. Launch windows shift often; this page is rebuilt every day with the latest scheduled time.

Falcon 9 Block 5 | SDA Tranche 1 Tracking Layer A is scheduled to lift off on Wednesday, September 30, 2026. The countdown above updates live, so you always see exactly how many days, hours, and minutes are left.