Airman 1st Class Trey Milstead, 22nd Maintenance Squadron nondestructive inspection apprentice, dips equipment in a phosphorus chemical June 2, 2020, at McConnell Air Force Base, Kansas. NDI Airmen are responsible for performing aircraft integrity checks regularly for the structural health of an airframe and ensure it is able to continue McConnell’s refueling mission. (U.S. Air Force photo by Senior Airman Alexi Bosarge)