Atlas 5 • USSF 51

March 22, 2023 Spaceflight Now

A United Launch Alliance Atlas 5 rocket, designated AV-101, launched the USSF 51 mission for the U.S. Space Force. This mission launched an undisclosed payload for the military. This is a 551 version the Atlas 5 vehicle, the most powerful model equipped with five strap-on solid rocket boosters. The launch window was three hours long.