Tankers in the air, maintenance put them there

EIELSON AIR FORCE BASE, Alaska -- Senior Airman Kailey Simmonds, 22nd Aircraft Maintenance Squadron assistant flying crew chief, attaches a hose to the valve stem on a KC-135 Stratotanker tire, July 11, 2017, at Eielson Air Force Base, Ala. The other side of the hose is attached to a nitrogen servicing cart which supplies the nitrogen to fill the tires to the correct PSI. (U.S. Air Force photo/Staff Sgt. Rachel Waller)