Maintenance beyond the aircraft
Airman 1st Class Heather Kennedy, 9th Physiological Support Squadron full pressure suit technician, inflates a full pressure suit to check if there are any leaks Aug. 31, 2016, at Beale Air Force Base, California. The suit allows for the pilot to fly higher than Armstrong's line by maintaining pressure around the pilot. Armstrong's line is the altitude at which fluids begin to boil at human body temperature. (U.S. Air Force photo/Airman Tristan D. Viglianco)

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Photo by: Airman Tristan D. Viglianco |  VIRIN: 160831-F-ZH169-100.JPG