USSF-87

Vulcan delivered two Geosynchronous Space Situational Awareness Program (GSSAP) satellites directly to geosynchronous orbit even though one of its four GEM 63XL solid rocket boosters suffered an anomaly early in the climb, which the core stage's two BE-4 engines compensated for. A similar booster problem had occurred on Vulcan's October 2024 certification flight.

The U.S. Space Force paused national security launches on Vulcan after the flight, and GPS III-10 was reassigned to Falcon 9.