Nellis pilot accumulates 2,000 flying hours in F-15C Published Jan. 30, 2012 Nellis Public Affairs NELLIS AIR FORCE BASE, Nev. -- U.S. Air Force Lt. Col. James Leffel, 57th Adversary Tactics Support Squadron commander, achieved a notable accomplishment in the flying community by accumulating more than 2,000 flying hours in the F-15C Eagle.