Tech Sgt. Nathan Wiley, 10th Missile Squadron facility manager, right, and Senior Airman Bryan Williams, 341st Force Support Squadron missile chef, run through a pre-operation checklist in preparation for a helicopter refuel at a missile alert facility May 11, 2017, at Malmstrom Air Force Base, Mont. Some of the items on the checklist require a second person, so the facility manager will get assistance from either the missile chef or an available security forces member. (U.S. Air Force photo/ Staff Sgt. Delia Marchick)

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Photo by: Staff Sgt. Delia Marchick |  VIRIN: 170511-F-DB515-0218.JPG