Dewar tank

A Dewar tank sits in a C-5M Super Galaxy that is being worked on at the isochronal maintenance dock March 26, 2013, on Dover Air Force Base, Del. Using Air Force Smart Operations of the 21st Century, Airmen from Dover AFB upgraded the tank to improve the reliability and life expectancy of the C-5M. The tank contains liquid nitrogen for when a fire is detected in an non-manned area of the aircraft, the valves open releasing the nitrogen to the area pushing the oxygen out allowing the nitrogen to put out the fire. (U.S. Air Force photo/Airman 1st Class Ashlin Federick)

Refueling

U.S. airmen prepare to push a C-5M Super Galaxy aircraft assigned to the 436th Airlift Wing (AW) at Dover Air Force Base, Del., into position for refueling Jan. 26, 2013, at Camp Marmal, Afghanistan. The 436th AW conducted the first C-5M multimodal deployment operation in support of U.S. Transportation Command. (U.S. Air Force photo by Tech Sgt. Parker Gyokeres/Released)

Refueling

U.S. airmen and civilian contractors attach a tow bar to the nose landing gear of a C-5M Super Galaxy aircraft Jan. 26, 2013, at Camp Marmal, Afghanistan. The aircraft, assigned to the 436th Airlift Wing at Dover Air Force Base, Del., was forward deployed to assist with the scheduled rotation of two U.S. Army aviation task forces. (U.S. Air Force photo by Tech Sgt. Parker Gyokeres/Released)

Refueling

U.S. airmen and civilian contractors attach a tow bar to the nose landing gear of a C-5M Super Galaxy aircraft Jan. 26, 2013, at Camp Marmal, Afghanistan. The aircraft, assigned to the 436th Airlift Wing at Dover Air Force Base, Del., was forward deployed to assist with the scheduled rotation of two U.S. Army aviation task forces. (U.S. Air Force photo by Tech Sgt. Parker Gyokeres/Released)

Refueling

U.S. Air Force Master Sgt. Justin Jones, an aircraft production superintendent with the 436th Airlift Wing at Dover Air Force Base, Del., disconnects the nose landing gear steering linkage on a C-5M Super Galaxy aircraft before using a tug to push the aircraft into its parking spot Jan. 26, 2013, at Camp Marmal, Afghanistan. The aircraft was forward deployed to support the scheduled rotation of two U.S. Army aviation task forces. (U.S. Air Force photo by Tech Sgt. Parker Gyokeres/Released)

Refueling

U.S. airmen and civilian contractors attach a tow bar to the nose landing gear of a C-5M Super Galaxy aircraft Jan. 26, 2013, at Camp Marmal, Afghanistan. The aircraft, assigned to the 436th Airlift Wing at Dover Air Force Base, Del., was forward deployed to assist with the scheduled rotation of two U.S. Army aviation task forces. (U.S. Air Force photo by Tech Sgt. Parker Gyokeres/Released)