The Air Force announced this week it is in final negotiations with two companies to contract propulsion technology work on an engine program designed to increase efficiency and strengthen the combat capabilities of its aircraft. The service on Sept. 18 announced that Pratt & Whitney and General Electric have been selected for final negotiations in the source selection process for its Adaptive Energy Technology Development (AETD) program. According to Program Director Tim Lewis, the goal of AETD is to fully...