Eric Brewer, 341st Civil Engineer Squadron power support systems mechanic, evaluates a part of a launch facility emergency generator March 7, 2017, at Malmstrom Air Force Base, Mont. To ensure all 150 missiles at Malmstrom are on 24-hour alert, Airmen from the power production shop must maintain emergency generators to instantly supply backup power to all of the launch facilities. (U.S. Air Force photo/Airman 1st Class Daniel Brosam)

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Photo by: Airman 1st Class Daniel Brosam |  VIRIN: 170307-F-DB969-0033.JPG