Airman 1st Class Zachary Free, 175th Civil Engineering Squadron, waits inside a trailer at a construction site May 24, 2017 at Warfield Air National Guard Base, Middle, River, Md. Free uses the trailer as an office to go over blueprints and a location to rest on overnight shifts. (U.S. Air National Guard photo by Airman Sarah M. McClanahan /Released Master Sgt. Chris Schepers)
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