Airman 1st Class Kyle Hyatt and Airman Braydon Stock-Simonds, 362nd Training Squadron F-16 crew chief apprentice course student, removes and replaces the main landing gear wheel and brake assembly. The brake and wheel assembly are replaced frequently on operational F-16's. The F-16 crew chief course has nine blocks, spanning six months. Airman 1st Class Hyatt is on block 8 out of 9. (U.S. Air Force photo by Senior Airman Robert L. McIlrath)