Professional bad guys: Space aggressors prepare Airmen for the enemy
Staff Sgt. Erick Vega, an avionics specialist with the 555th Fighter Squadron out of Aviano Air Base, Italy, prepares his equipment and runs through checklist during exercise Red Flag July 21, 2016 at Nellis Air Force Base, Nevada. Minutes later, Vega would encounter a challenge to his space systems as a result of a test by the 527th Space Aggressors Squadron. (U.S. Air Force photo/Tech. Sgt. David Salanitri)

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Photo by: Tech. Sgt. David Salanitri |  VIRIN: 160721-F-TM170-253.JPG