081203-F-8519B-031
YOKOTA AIR BASE, Japan -- Mr. Darrell Singleton, the Aero Club aircraft mechanic supervisor, inspects the front part of a Cessna 172M engine for fluid leaks Dec. 3. This is done after 100 hours of flight, as required by regulation, to ensure the aircraft is safe and operational.(U.S. Air Force photo by Senior Airman Laszlo Babocsi)