Live coverage: Falcon 9 disintegrates after launch

The 54 national security missions will be awarded over the course of five years spanning FY25-FY29. The U.S. Space Force said missions are anticipated to fly from FY27-FY32.

SpaceX teams at Vandenberg Air Force Base in California are preparing to launch a Falcon 9 rocket into orbit Monday, powered by a reused first stage booster flying on its third mission, a first for the company as engineers continue chasing a long-term goal of re-flying the same rocket on back-to-back days.

Watch a time-lapse video of the Falcon 9 rocket being lifted upright at launch complex 39A in readiness for another launch attempt on a commercial space station resupply mission.