Maj. Lee Hafen
U.S. Air Force Maj. Lee Hafen, a 35th Surgical Operations Squadron general surgeon, ensures a wound is clean during an operation at Misawa Air Base, Japan, Nov. 17, 2017. Some surgeries are diagnostic, which means the doctor performs the surgery to determine what issue is affecting the patient, while other surgeries are completed to address a known issue.
(U.S. Air Force photo by Staff Sgt. Deana Heitzman)