From the ground up
U.S. Air Force Senior Airman Katerina Norton, 20th Equipment Maintenance Squadron aerospace ground equipment journeyman, creates tire pressure labels at Shaw Air Force Base, S.C., Nov. 2, 2016. The labels, required by technical orders, ensure the correct pressure is clearly marked on tires for maintenance purposes. (U.S. Air Force photo by Airman 1st Class Destinee Sweeney)