U.S. Air Force Senior Airman Shane Posey, 633rd Medical Support Squadron biomedical equipment journeyman, receives a coin from U.S. Air Force Chief of Staff Gen. Mark A. Welsh III, during a base tour at Langley Air Force Base, Va., April 29, 2015. During his visit, Welsh recognized Airmen from various units who have performed at outstanding levels. (U.S. Air Force photo by Staff Sgt. Teresa J. Cleveland/Released)