The head of the F-35 joint program office expects the Pentagon to approve an updated Block 4 modernization strategy later this month. Program Executive Officer Vice Adm. Mat Winter told reporters Oct. 1 the Air Force and Navy acquisition chiefs have signed off on the strategy for Block 4 continuous capability development and demonstration (C2D2) and the plan is awaiting approval from Under Secretary of Defense for Acquisition and Sustainment Ellen Lord. He expects her to approve the strategy in...