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U.S. Army Reserve railway operations crewmembers of the 757th Expeditionary Railway Center (ERC) use red tape to indicate defective bolts during a railway inspection at Joint Base Langley-Eustis, Virginia, August 6, 2022. The 757th ERC is the Department of Defense’s only rail unit, whose mission is to assess rail infrastructure and provide feasibility and rail analysis for military installations both domestically and abroad. (U.S. Army Reserve photo by Sgt. Therese Prats)