You need air to breathe

Air hoses lining the back wall of the 92nd Aircraft Fuel Systems Squadron's hangar feed oxygen to Airmen conducting repairs on aircraft at Fairchild Air Force Base, Washington, Nov. 21, 2017. The fuel and chemicals used to repair and seal fuel tanks are toxic and require the use of safety precautions such as air mask respirators and specialized protective clothing. (U.S. Air Force photo/Senior Airman Ryan Lackey)

PHOTO BY: SrA Ryan Lackey
VIRIN: 171204-F-HU835-129.JPG
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