Christopher Yeh, Stanford University Hacking 4 Defense student, looks at aerial imagery produced by the Optical Bar Camera at Beale Air Force Base, Calif., April 13, 2018. The 9th Intelligence Squadron is the sole Department of Defense unit responsible for OBC operations through the employment of the Film Processing Center (FPC). (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-JG883-325.JPG