America's newest sixth-generation bomber, the B-21 Raider, dropped its weapon for the first time.
The Air Force said the prototype, which took off from Edwards Air Force Base, shot down conventional weapons.
This officially marks the Raider's transition from flight test to operational strategic platform status.
Air Force Secretary Troy Meinke said it could now "pose a threat to any target if deterrence fails."
The first aircraft are scheduled to arrive at Ellsworth Air Force Base in South Dakota in 2027, with plans to purchase at least 100 of these aircraft.