Post-flight inspection
Airman 1st Class Christopher Clement (right), 379th EAMXS aerospace propulsion apprentice, inspects the chip detectors in the oil system of an RC-135 Rivet Joint. Chip detectors are four magnets that locate abnormal wear by picking up metal particles, and are checked every 60 hours. Staff Sgt. Daniel Wirth (left), 379th EAMXS aerospace propulsion craftsman, oversees the post-flight inspection. (U.S. Air Force photo by Senior Airman Erik Hofmeyer)