SHARE: Pictured is a SpaceX photo of the company's Falcon 9 launch of the Space Development Agency’s Tranche 1 Transport Layer-B (T1TL-B) mission from Vandenberg Space Force Base, Calif. on Sept. 10, 2025. SpaceX has received a more than $178 million task order from U.S. Space Force's Systems Command (SSC) for two National Security Space Launch Phase 3, Lane 1 launches from Cape Canaveral Space Force Station, Fla., and Vandenberg Space Force Base, Calif., for the Space Development Agency-4 (SDA-4) mission in fiscal 2027. The latter includes "dozens of missile tracking satellites" by Sierra Space, SSC said on Tuesday. In January 2024, SDA awarded newcomer Sierra Space an up to $740 million Other… Subscriber-only content. Please log in below. Email or Username