Chief Master Sgt. Elaine Cole, Air Combat Command commander support staff superintendent, receives an eye exam from U.S. Air Force Capt. Sean Berensen, 633rd Medical Group optometrist, at Langley Air Force Base, Va., April 18, 2013. Using both machines and Airmen, the optometry clinic provides beneficiaries with a variety of services such as routine eye exams, acute-eye issues, and follow-up service on emergency care. (U.S. Air Force photo by Staff Sgt. Antoinette Gibson/Released)