Pre-flight check
Tech. Sgt. Bryan Campbell 86th Aircraft Maintenance Squadron flying crew chief, inspects the propellers of a C-130J Super Hercules prior to take-off at RAF Fairford, England, April 25. Engine checks are performed routinely before every flight to ensure the engines are in proper repair and ready for the aircrafts next mission. (U.S. Air Force photo/Airman 1st Class Trevor Rhynes)