May 29, 2013: The Lockheed Martin Skunk Works facility in Palmdale, California, has performed maintenance on one of the two C-5C Galaxy aircraft in the world in May 2013. The C-5C features more cargo capacity than A & and B models due to removal of the entire passenger compartment. Each of the two C-5C aircraft is assigned to Travis Air Force Base, California, and will eventually be modernised to become the C-5M Super Galaxy.