The director of the Air Force's stealthy, next-generation bomber program indicated this week the effort may soon be entering a riskier phase of development involving technology integration. Due to the program's classification, the service has revealed very little information about the B-21 bomber's development progress except to note that it is, to date, on schedule and on cost. In March, officials announced the program has passed two preliminary design reviews -- one of which occurred during the risk-reduction phase --...
