Airman 1st Class Vincent Gaspara, left, and Nathan Shull, center, and Tech. Sgt. Andrew Hamilton, right, all crew chiefs assigned to the 436th Aircraft Maintenance Squadron, remove a C-5M Super Galaxy main landing gear wheel and tire assembly April 22, 2014, at Dover Air Force Base, Del. The crew chiefs removed and replaced the 4A1 tire due to excessive tread wear. (U.S. Air Force photo/Roland Balik)