Master Sgt. Jacob L. Longest (center), 9th Physiological Support Squadron flight chief, gives a tour to a group of students from Stanford University’s Hacking 4 Defense class where they learned about the many unique challenges faced by U-2 Dragon Lady pilots at Beale Air Force Base, Calif., April 13, 2018. The H4D class allows students to tackle complex problems that are critical to national security and invent new technologies with assistance from of a team of engineers, scientists, graduate students and policy experts. (U.S. Air Force photo by Airman First Class Dana M. Tourtellotte/unreleased)

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Photo by: Airman 1st Class Dana M. Tourtelloute |  VIRIN: 180413-F-JG883-0522.JPG