U.S. Air Force Airmen assigned to the 1st Operations Support Squadron observe the flight line from the air traffic control tower at Langley Air Force Base, Va., Nov. 4, 2015. The tower allows a 360 degree, above ground view of the entire installation. (U.S. Air Force photo by Airman 1st Class Derek Seifert/ Released)

U.S. Air Force Senior Airman Colie Mears, 1st Operations Support Squadron air traffic controller, reviews weather changes in the control tower at Langley Air Force Base, Va., Nov. 4, 2015. Mears, along with other ATC members record the weather conditions with the use of radar, instrument landing systems and various types of airfield lighting to ensure pilots are receiving the correct weather information. (U.S. Air Force photo by Airman 1st Class Derek Seifert/ Released)

U.S. Air Force Tech. Sgt. Mark Chavez, 1st Operations Support Squadron air traffic controller, confirms weather changes in the control tower at Langley Air Force, Va., Nov. 4, 2015. Air traffic controls Airmen approve flight plans, ensure takeoff and landing safety and direct air traffic, for all aircraft working with the airfield. (U.S. Air Force photos by Airman 1st Class Derek Seifert/ Released)

A U.S. Air Force Airman checks procedures in the air traffic control tower at Langley Air Force Base, Va., Nov. 4, 2015. Knowing the proper procedures and terms ensure fluid communication between the tower and pilots, in the air and on the ground. (U.S. Air Force photo by Airman 1st Class Derek Seifert/ Released)

A U.S. Air Force Airman annotates changes to weather patterns in the air traffic control tower at Langley Air Force Base, Va., Nov. 4, 2015. The Airmen in the ATC tower are responsible for relaying air and ground changes to pilots. (U.S. Air Force photo by Airman 1st Class Derek Seifert/ Released)

U.S. Air Force Senior Airman Adam Bray, 1st Operations Support Squadron air traffic controller, makes corrections to the arrival strip in the control tower at Langley Air Force Base, Va., Nov. 4, 2015. The arrival strips allows ATC Airmen to know the order of aircraft landing on the flight line, giving them the opportunity to properly prepare for the arrivals. (U.S. Air Force photo by Airman 1st Class Derek Seifert/ Released)