NELLIS AIR FORCE BASE, Nev. -- Crew chiefs with the United States Air Force Aerial Demonstration Squadron perch under the wing of "Thunderbird" F-16 Fighting Falcons here in the early morning light during a training launch. The Thunderbirds are still in training season gearing up for their show season beginning in early March and ending in late November. (U.S. Air Force Photo by Tech. Sgt. Justin D. Pyle)