A nurse from the Hallym University Dongtan Sacred Heart Hospital pierces the finger of a retiree to test his blood sugar for diabetes during the Retiree Appreciation Day in the Exchange at Osan Air Base, Republic of Korea, Feb. 4, 2016. The blood-sugar test was one of six stations available to retirees during the free health screening. (U.S. Air Force photo by Tech. Sgt. Travis Edwards/Released)