YOKOTA AIR BASE, Japan --Tech. Sgt. Douglas Harper, 374th Aircraft Maintenance Squadron flying crewchief, takes a moment for mentorship, teaching his Airmen about the differences between a receiver-transmitter and a generator control unit at Yokota Air Base, Japan, March 14. The C-130 aircraft play a crucial role in disaster relief due to their ability to land on dirt runways and other less-than-ideal landing conditions. (U.S. Air Force photo/Staff Sgt. Samuel Morse)