U.S. Air Force Staff Sgt. Kevin Matthews, 54th Air Refueling Squadron boom operator instructor, U.S. Air Force Maj. Gregory Kuhn, 54th instructor pilot, and U.S. Air Force Lt. Col. Bryan Thomas, 54th director of operations, treat a wounded Airman during the Gut Check Challenge as part of National Police Week, May 14, 2014. During the challenge, each team performed self-aid and buddy care on a victim and carried the Airman to an ambulance. Police Week is celebrated to recognize defenders who have fallen in the line of duty. (U.S. Air Force photo by Airman 1st Class J. Zuriel Lee/Released)