DAYTON, OH -- The Air Force's program executive officer for fighters and bombers told reporters last week the service is in the process of rebaselining the B-2 Defensive Management System Modernization effort -- a $3 billion overhaul aimed at improving the bomber's survivability. Air Force acquisition executive Will Roper told lawmakers in March the program was facing a possible eight-month delay as it worked with prime contractor Northrop Grumman to implement an agile software development framework. Asked last week during...