U.S. Air Force Tech. Sgt. Nathanael Merrill, 39th Medical Operations Squadron NCO in charge of the dental lab, warms up a custom mouth guard at Incirlik Air Base, Turkey, June 8, 2018. The soft plastic mouth guard is warmed to create a more effective and comfortable fit for the wearer. (U.S. Air Force photo by Staff Sgt. Rebeccah Woodrow)