sentences:  However, the Block 25 aircraft were all powered by the Pratt & Whitney F100-PW-200 turbofan, which were prone to engine stalls.In 1998, the squadron received Block 30 aircraft, with wider intakes and the General Electric F-110 engine.However, by the mid-1990s and with the end of the Cold War, there appeared to be no longer any threat to America's homeland from bombers or cruise missiles.