U.S. Air Force Senior Airman Daryl Rivera-Rivera, air

U.S. Air Force Senior Airman Daryl Rivera-Rivera, air traffic control journeyman assigned to the 6th Operation Support Squadron, and Airman 1st Class Julian Hurrey, air traffic control apprentice, examine the flightline at MacDill Air Force Base, Florida, Oct. 1, 2018. Controllers like Hurrey spend up to 18 months in training before they can conduct flight operations. (U.S. Air Force photo by Airman 1st Class Ryan C. Grossklag)