Air Force Airman 1st Class Christopher Smith, a cyber systems operations technician with the 52nd Combat Communications Squadron (CBCS), and Staff Sgt. Nicholas Mattox, an electrical power production craftsman with the 52nd CBCS, set up a radio frequ

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Air Force Airman 1st Class Christopher Smith, a cyber systems operations technician with the 52nd Combat Communications Squadron (CBCS), and Staff Sgt. Nicholas Mattox, an electrical power production craftsman with the 52nd CBCS, set up a radio frequencies kit during Vigilant Shield 15 in Goose Bay, Canada, Oct. 18, 2014. Vigilant Shield is a weeklong annual exercise designed to emphasize an integrated Department of Defense and civil response in support of the national strategy of aerospace warning and control, defense support of civil authorities and homeland defense.

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Photo credit: © 501 collection / Alamy / Afripics
License: Licensed
Model Released: No

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