Tech. Sgt. Steven Johnson adjusts the tension as Staff Sgt. Damian Ford, both with the 932nd Maintenance Squadron, assists by helping to hold the oversize wrench in place during a routine tire swap Dec. 29, 2016, Scott Air Force Base, Illinois. "Changing a C-40 tire is very similar to changing a car tire, just bigger with a few more required adjustments," said Johnson. (U.S. Air Force photo by Christopher Parr)