250226-F-DR389-1154

Staff Sgt. Terry McGivern, a 726th Air Mobility Squadron heavy integrated avionics craftsman, don personal protective equipment prior to carrying out liquid oxygen servicing on a C-17A Globemaster III on Ramstein Air Base, Germany, Feb. 26, 2025. Liquid oxygen is a very cold and dangerous substance, requiring personnel to wear several pieces of specialized PPE to protect from severe skin and eye irritation as well as frostbite. Liquid oxygen has many applications onboard aircraft such as breathing oxygen for aircrew and passengers in emergency situations, High Altitude Low Opening operations, and Aeromedical Evacuation purposes. (U.S. Air Force photo by Staff Sgt. Joshua T. Crossman)

250226-F-DR389-1121

Staff Sgt. James Sullivan, left, a 726th Air Mobility Squadron C-17A Globemaster III crew chief, and Staff Sgt. Terry McGivern, a 726 AMS heavy integrated avionics craftsman, don personal protective equipment prior to carrying out liquid oxygen servicing on a C-17A Globemaster III on Ramstein Air Base, Germany, Feb. 26, 2025. Liquid oxygen is a very cold and dangerous substance, requiring personnel to wear several pieces of specialized PPE to protect from severe skin and eye irritation as well as frostbite. Liquid oxygen has many applications onboard aircraft such as breathing oxygen for aircrew and passengers in emergency situations, High Altitude Low Opening operations, and Aeromedical Evacuation purposes. (U.S. Air Force photo by Staff Sgt. Joshua T. Crossman)

250226-F-DR389-1195

Staff Sgt. Terry McGivern, a 726th Air Mobility Squadron heavy integrated avionics craftsman, pushes a liquid oxygen servicing cart, in preparation for servicing a C-17A Globemaster III liquid oxygen converter on Ramstein Air Base, Germany, Feb. 26, 2025. Liquid oxygen is an extremely cold substance, boiling at -297 degrees Fahrenheit, and must be handled with extreme care.Liquid oxygen has many applications onboard aircraft such as breathing oxygen for aircrew and passengers in emergency situations, High Altitude Low Opening operations, and Aeromedical Evacuation purposes. (U.S. Air Force photo by Staff Sgt. Joshua T. Crossman)

250226-F-DR389-1172

Staff Sgt. James Sullivan, a 726th Air Mobility Squadron C-17A Globemaster III crew chief, ensures a valve is closed on a liquid oxygen servicing cart prior to repositioning it next to a C-17A Globemaster III. on Ramstein Air Base, Germany, Feb. 26, 2025. Liquid oxygen is an extremely cold substance, boiling at -297 degrees Fahrenheit, and must be handled with extreme care. Liquid oxygen has many applications onboard aircraft such as breathing oxygen for aircrew and passengers in emergency situations, High Altitude Low Opening operations, and Aeromedical Evacuation purposes. (U.S. Air Force photo by Staff Sgt. Joshua T. Crossman)

250226-F-DR389-1183

Staff Sgt. James Sullivan, a 726th Air Mobility Squadron C-17A Globemaster III crew chief, ensures a valve is closed on a liquid oxygen servicing cart prior to repositioning it next to a C-17A Globemaster III on Ramstein Air Base, Germany, Feb. 26, 2025. Liquid oxygen is an extremely cold substance, boiling at -297 degrees Fahrenheit, and must be handled with extreme care. Liquid oxygen has many applications onboard aircraft such as breathing oxygen for aircrew and passengers in emergency situations, High Altitude Low Opening operations, and Aeromedical Evacuation purposes. (U.S. Air Force photo by Staff Sgt. Joshua T. Crossman)

250226-F-F3221-1002

Staff Sgt. James Sullivan, left, a 726th Air Mobility Squadron C-17A Globemaster III crew chief, talks with Staff Sgt. Terry McGivern, a 726 AMS heavy integrated avionics craftsman, while servicing liquid oxygen on a C-17A Globemaster III on Ramstein Air Base, Germany, Feb. 26, 2025. Aircraft maintenance specialists at en-route locations are often taught how to work on systems outside of their career field, further solidifying Agile Combat Employment concepts. Liquid oxygen has many applications onboard aircraft such as breathing oxygen for aircrew and passengers in emergency situations, High Altitude Low Opening operations, and Aeromedical Evacuation purposes. (U.S. Air Force photo by Staff Sgt. Klay Osler)

250226-F-DR389-2074

Staff Sgt. James Sullivan, left, a 726th Air Mobility Squadron C-17A Globemaster III crew chief, and Staff Sgt. Terry McGivern, a 726 AMS heavy integrated avionics craftsman, purge a liquid oxygen service hose before connecting it to a C-17A Globemaster III aircraft on Ramstein Air Base, Germany, Feb. 26, 2025. Purging servicing hoses prior to connecting to aircraft, reduces the amount of foreign object debris introduced into the aircraft’s liquid oxygen system. Liquid oxygen has many applications onboard aircraft such as breathing oxygen for aircrew and passengers in emergency situations, High Altitude Low Opening operations, and Aeromedical Evacuation purposes. (U.S. Air Force photo by Staff Sgt. Joshua T. Crossman)

250226-F-DR389-2034

Both Staff Sgt. James Sullivan, right, a 726th Air Mobility Squadron C-17A Globemaster III crew chief, and Staff Sgt. Terry McGivern, a 726 AMS heavy integrated avionics craftsman, vent one of the three liquid oxygen converters, prior to servicing on a C-17A Globemaster III on Ramstein Air Base, Germany, Feb. 26, 2025. Liquid oxygen has many applications onboard aircraft such as breathing oxygen for aircrew and passengers in emergency situations, High Altitude Low Opening operations, and Aeromedical Evacuation purposes. (U.S. Air Force photo by Staff Sgt. Joshua T. Crossman)

250226-F-DR389-1235

Chilled for Takeoff, LOX in Flight

Published March 24, 2025
By Staff Sgt. Joshua T. Crossman & Staff Sgt. Klay Osler
521st Air Mobility Operations Wing

RAMSTEIN AIR BASE, Germany -- Staff Sgt. Terry McGivern, a 726th Air Mobility Squadron heavy integrated avionics craftsman, don personal protective equipment prior to carrying out liquid oxygen servicing on a C-17A Globemaster III on Ramstein Air Base, Germany, Feb. 26, 2025. Liquid oxygen is a very cold and dangerous substance, requiring personnel to wear several pieces of specialized PPE to protect from severe skin and eye irritation as well as frostbite. Liquid oxygen has many applications onboard aircraft such as breathing oxygen for aircrew and passengers in emergency situations, High Altitude Low Opening operations, and Aeromedical Evacuation purposes. (U.S. Air Force photo by Staff Sgt. Joshua T. Crossman)