Master Sgt. Michael Obrien, the incident commander assigned to the 386th Expeditionary Civil Engineer Squadron fire department, discusses a quick reference checklist with first responders during a major accident response exercise Thursday May 25, 2017, at an undisclosed location in Southwest Asia. The 386th AEW held the MARE to evaluate its effectiveness at mitigating the effects of a major accident on the operations tempo of the wing. (U.S. Air Force photo by Tech. Sgt. Jonathan Hehnly)

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Photo by: Tech. Sgt. Jonathan Hehnly |  VIRIN: 170525-F-ZI207-1855.JPG