Staff Sgt. Sean Durkin reviews a technical order prior to inspecting the engines of a C-17 Globemaster III April 12, 2011, at Spangdahlem Air Base, Germany. Sergeant Durkin is an aircraft hydraulics journeyman assigned to the726th Air Mobility Squadron. (U.S. Air Force photo/Senior Airman Nathanael Callon) Photo essay: Airmen perform preflight inspection by Senior Airman Nathanael Callon 52nd Fighter Wing Public Affairs 4/14/2011 - SPANGDAHLEM AIR BASE, Germany (AFNS)  -- Members of the 726th Air Mobility Squadron conduct comprehensive preflight inspections here Apr 12. View the slideshow.