U.S. Air Force F-15E Strike Eagle fighters are flying again, following a grounding after the November 2 loss of an F-15C interceptor version in the U.S. That crash followed an apparent midair break-up and nixed U.S. plans to fly an F-15E in the Dubai Air Show. The older F-15C fleet remains grounded. USAF officials said that the incident underscored their desire to boost the F-22 Raptor fleet beyond the 190 that Congress has approved. The F-22 replaces the F-15C.