Engine runs on the first B-21 are underway, with tests of its fuel systems, doors, landing gear and more already complete. The Air Force declined to provide details about what, specifically, the safety inspections are looking to find. Chief Master Sgt. Justin Deisch was fired after an investigation into undisclosed "inappropriate conduct." Retiring B-1B and B-2 bombers will make way for the new B-21 Raider over the next two decades. If confirmed, Lt. Gen. Anthony Cotton would be the first Black man to run Air Force Global Strike Command. It's the latest in a string of long-range bomber flights to Europe this month to train with and bolster allies. Col. Jason Beers is moving to a new leadership position at Air Force Special Operations Command. Air Force Global Strike Command ordered a safety stand-down of its B-1B Lancer bombers after discovering a problem with its ejection seats. No more stories