U.S. Air Force Senior Airman Joshua Shaffer, 1st Operations Support Squadron air traffic controller, teaches Air Force Junior ROTC cadets about his job responsibilities during Shadow Day at Langley Air Force Base, Va., June 24, 2014. Eighty cadets from five local high schools visited various units at Langley to learn about the Air Force mission. (U.S. Air Force photo by Senior Airman Kayla Newman/Released)