The Air Force is progressing toward a down-select decision for the B-52 Commercial Engine Replacement Program, with plans to award a contract in September following a technical risk assessment and cost estimate review this summer. The program’s current strategy is to take advantage of Middle Tier Acquisition authorities to conduct two phases of prototyping. In the first phase, which is ongoing, the service is working with Pratt & Whitney, General Electric and Rolls Royce to develop virtual prototypes of their...