U.S. Air Force Airman 1st Class Christopher Allen, Air Combat Command 488th Intelligence Squadron client system technician, receives a coin from Air Force Chief of Staff Gen. David L. Goldfein at RAF Mildenhall, England, Dec. 26, 2018. Allen was coined for saving two Airmen’s lives and being a top performer in his unit. (U.S. Air Force photo by Tech. Sgt. Emerson Nuñez)