
United Launch Alliance on Tuesday announced it had rescheduled a Delta IV Heavy launch carrying a classified payload for the National Reconnaissance Office for Jan. 19. The launch, dubbed NROL-71, was previously scheduled to launch in December from Vandenberg Air Force Base, California, but was scrubbed multiple times due to technical and weather conditions. The latest attempted launch on Dec. 19 was postponed due to elevated hydrogen levels in the port engine. At that point, the Boeing [BA] and Lockheed…