Air Force Vice Chief of Staff Gen. Dave Allvin laid out key dates on the service's major acquisition programs this week in his written testimony to the Senate, which held a hearing for his nomination as chief of staff. The highly secretive B-21 Raider nuclear bomber is still expected to complete its first flight by the end of the calendar year, Allvin wrote. Contractor Northrop Grumman has said it’s reached key markers for first flight including powering on the engine...
