The secretive winged spacecraft launched on a SpaceX Falcon Heavy rocket on Dec. 29, 2023 to conduct a classified mission. The landing concludes the seventh flight of the Boeing-built spacecraft since 2010.
Falcon Heavy is returning to the hangar and the launch of the USSF-52 mission with the X-37B spaceplane is on hold. A ground issue scrubbed an earlier launch attempt and now required work on the vehicle itself.