Airman 1st Class Mitchell Rostollan, a 28th Medical Support Squadron medical laboratory technician, draws an Airman's blood at Ellsworth Air Force Base, S.D., Dec. 4, 2018. The 28th Medical Group lab handles urinalysis, deployment readiness, sexually transmitted infection testing and other specialized functions for Department of Defense employees, retirees and families. (U.S. Air Force photo by Airman 1st Class Nicolas Z. Erwin)