Retired U.S. Air Force Master Sgt. Kristopher Parker, an explosive disposal technician, stands with his friends and family after receiving his Silver Star Medal March 17, 2017, at Dyess Air Force Base, Texas. For Parker’s courage, valor and selfless sacrifice in the face of danger, the Air Force bestowed upon him the Silver Star, the U.S. Air Force’s third-highest decoration. (U.S. Air Force photo by Airman 1st Class Emily Copeland)