The C-5M Super Galaxy is a strategic transport aircraft and is the largest aircraft in the Air Force inventory. Its primary mission is to transport cargo and personnel for the Department of Defense.
The C-5M is a modernized version of the legacy C-5 designed and manufactured by Lockheed Martin. Currently the U.S. Air Force owns and operates 52 C-5B/C/M. They are stationed at Dover Air Force Base, Delaware; Travis AFB, California; Lackland AFB, Texas; and Westover Air Reserve Base, Massachusetts.
The C-5M, with a cargo load of 281,001 pounds (127,460 kilograms), can fly 2,150 nautical miles, offload, and fly to a second base 500 nautical miles away from the original destination — all without aerial refueling. With aerial refueling, the aircraft's range is limited only by crew endurance.
Lockheed-Georgia Co. delivered the first operational C-5A Galaxy to the 437th Airlift Wing, Charleston AFB, South Carolina, in June 1970.