The service hopes having two B-21s at Edwards Air Force Base will allow it to begin testing the bomber's weapons integration and critical mission systems.
Industry and military drone operators flew tethered and untethered first-person drones through a course designed to test endurance and maneuverability.
The LGM-35A Sentinel has run into severe cost overruns and schedule delays that could force the Air Force to keep Minuteman IIIs operational years longer.