B-21 Completes Preliminary Design Review, U.S. Air Force Says
The secretive bomber program is keeping to its schedule and budget, according to Gen. Stephen Wilson, Air Force vice chief of staff.
The U.S. Air Force has closely guarded details of development program for the B-21 bomber, seen here in an artist's rendering.
The U.S. Air Force has closely guarded details of development program for the B-21 bomber, seen here in an artist's rendering.