Army Reserve engineers with the 671st Engineer Company and 301st Maneuver Enhancement Brigade cross the Columbia River aboard an Improved Ribbon Bridge (IRB) raft system during a wet gap crossing exercise at the 555th Engineer Brigade’s Yakima Strike exercise at the Yakima Training Center, Washington, August 17, 2021. IRBs are used to transport weapon systems, troops and supplies over water when permanent bridges are not available. ( Army photo by Sgt. John Weaver)

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Keywords: army, crossing, engineers, gap, irb, operations, rafting, reserves, wet, ytc