AETC officials announce 2009 crew chief award winner Published March 6, 2009 RANDOLPH AIR FORCE BASE, Texas -- Air Education and Training Command officials recently named Staff Sgt. Christopher R. Schettler, 56th Aircraft Maintenance Squadron, Luke Air Force Base, Ariz., the 2009 Crew Chief of the Year. Sergeant Schettler will represent the command in the Chief Master Sergeant of the Air Force Thomas N. Barnes, Crew Chief of the Year competition.