Falcon 9 FAA: ‘Regional power outage’ causes last-minute scrub of NASA’s TRACERS mission July 22, 2025 Will Robinson-Smith A total of 11 spacecraft will be deployed beginning about 1.5 hours after liftoff. SpaceX is aiming to launch the mission from pad 4 East at Vandenberg Space Force Base on July 23 at 11:13 a.m. PDT (2:13 p.m. EDT, 1813 UTC).