Senior Airman Keenan Herlocker, 345th Operations Support Squadron airfield systems journeyman, checks the functions on a localizer which transmits radio signals to approaching aircraft to aid in landing, Sept. 17, 2014, Eielson Air Force Base, Alaska. According to major command guidance, Eielson has transferred authority of the systems to the 354th Operations Support Squadron. Icemen are ensuring the future of continued airfield communications success, as Eielson plays an important role in aviation in the Arctic. (U.S. Air Force photo by Staff Sgt. Kirsten Wicker/Released)