July 17, 2026 U. S. Space Force successfully launches additional Tranche 1 satellites, expands Proliferated Warfighter Space Architecture U.S. Space Force’s Space Systems Command (SSC) and the Space Development Agency (SDA) launched the SDA’s Tranche 1 (T1) Transport Layer-E (T1TL-E) mission at 1:32 p.m. PDT Thursday, aboard a SpaceX Falcon 9 rocket from Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base, Calif. The
Dec. 17, 2024 USSF field commands successfully launch GPS III, demonstrating expedited launch capabilities The mission successfully achieved a complex effort across multiple Space Force organizations to pull an existing GPS III satellite from storage, accelerate integration and launch vehicle readiness, and rapidly process for launch.