The C-5 Galaxy -- one of the largest aircraft in the world -- provides the Air Mobility Command intertheater airlift in support of United States national defense. The aircraft carry fully equipped combat-ready military units to any point in the world on short notice then provide field support required to help sustain the fighting force. The C-5 can carry outsize and oversize cargo intercontinental ranges and can take off or land in relatively short distances. Ground crews can load and off load the C-5 simultaneously at the front and rear cargo openings.