Airman 1st Class Michael Walters uses a magnetic particle machine. U.S. Air Force Airman 1st Class Michael Walters uses a magnetic particle machine to magnetize aircraft parts in order to detect defects under florescent lighting at Aviano Air Base, Italy, on Nov. 18, 2004. Walters is a non-destructive inspector assigned to the 31st Maintenance Squadron. Non-destructive inspectors perform critical inspections on aircraft parts and make recommendations to other maintenance personnel. SHARE: Download: Full Size (0.06 MB) Credit: VIRIN: 094140-O-FIG77-383.jpg Photo Gallery