Crew chief
Staff Sgt. James McFadden prepares to crew an F-16 Fighting Falcon Jan. 8, 2015, at Misawa Air Base, Japan. McFadden is an F-16 crew chief assigned to the 35th Aircraft Maintenance Squadron, his duties are extensive, and include things like pre- and post-flight inspections, intake inspections and all-around maintenance. (U.S. Air Force photo/Staff Sgt. Derek VanHorn)