Two ongoing Pentagon posture reviews could shape a requirement for additional B-21 bombers beyond the 100-aircraft floor the Air Force has set over the last year. Lt. Gen. Jerry Harris, deputy chief of staff for plans and requirements, told the House Armed Services seapower and projection forces subcommittee May 25 the service's B-21 fleet-size requirement will be informed by the ongoing Nuclear Posture Review, expected to continue through the end of the year, and the National Military Strategy, which should...