ELLSWORTH AIR FORCE BASE S.D. - Global Strike Challenge inspector Staff Sgt. Michael Lyle examines a lock and lock tool during the Global Strike Challenge, June 9. Sergeant Lyle is assigned to the 2nd Maintenance Squadron on Barksdale AFB, La. as a loading centralization crew member. Examining tools during the composite tool kit inspection is just one of six portions evaluated by Global Strike Challenge inspectors. (U.S. Air Force photo/Airman 1st Class Corey Hook)