LANGLEY AIR FORCE BASE, Va. -- Airman 1st Class Robert Kerr, an F-15 dedicated crew chief with the 71st Aircraft Maintenance Unit, checks the engines on an F-15 Eagle piloted by Lt. Col. Christopher Young Jan. 9. After a month-long stand-down, the 71st Fighter Squadron launched the first of its F-15C fleet Jan. 9 at 9:30 a.m. (U.S. Air Force photo/Staff Sgt. Samuel Rogers)