U.S. Air Force Staff Sgt. Kevin Matthews, 54th Air Refueling Squadron boom operator instructor, climbs over a hurdle during the Gut Check Challenge as part of National Police Week, May 14, 2014. The challenge consisted of events including hurdles, tire flips and self-aid and buddy care. Police Week is celebrated the week of May 15, which is Peace Officers Memorial Day. (U.S. Air Force photo by Airman 1st Class J. Zuriel Lee/Released)
Airman 1st Class Jimmie Lee
Taken on 14 May 2014
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