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