A C-5M Super Galaxy undergoes a Maintenance Steering Group-3 Major inspection Dec. 2, 2015, in the isochronal dock of the 436th Maintenance Squadron at Dover Air Force Base, Del. A Major ISO inspection takes approximately 55 days and more than 100 maintainers can be working on the aircraft at any given time.
(U.S. Air Force photo/Senior Airman William Johnson)
