U.S. Air Force Airman 1st Class Jonathan Redd, an airfield systems specialist assigned to the 241st Air Traffic Control Squadron (ATCS), Missouri Air National Guard, performs an operations test on a mobile air traffic control tower at Rosecrans Air National Guard Base, St. Joseph, Mo., Feb. 11, 2015. Redd is preparing for an inspection at the 241st ATCS later this year. (U.S. Air National Guard photo by Tech. Sgt. Michael Crane/Released)