Capt. Julianne Gillespie checks the breathing of Airman 1st Class Erich Held demonstrating how a pilot would use the Reduced Oxygen Breathing Device Feb. 5, 2014, at Joint Base Lewis-McChord, Wash. The ROBD is slated to replace the more expensive altitude chamber for the required refresher training aircrew needs every five years. Gillespie is a 62nd Airlift Wing aerospace and operational physiologist and Held is a 62nd Medical Squadron optometry technician. (U.S. Air Force photo/Tech. Sgt. Sean Tobin)
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