U.S. Air Force Col. Michael Hernandez, 325th Fighter Wing commander, dons a gas mask at Tyndall Air Force Base, Fla., May 4, 2018. Hernandez shadowed Senior Airman Dannyel Butte, 325th Aerospace Medicine Squadron bioenvironmental engineering journeyman, who was selected for the Airman Shadow program. This program allows Airmen to demonstrate their daily job duties and responsibilities to the base commander. (U.S. Air Force photo by Airman 1st Class Delaney Gonzales/Released)
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