Senior Airman Jeffrey Clark, a 48th Security Forces Squadron response force leader, puts on a protective face mask at Royal Air Force Lakenheath, England, April 16, 2020. The squadron has taken preventative measures to combat the spread of COVID-19 as they continue to protect and defend U.S. Air Forces in Europe’s largest fighter wing. (U.S. Air Force photo by Airman 1st Class Jessi Monte)