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SWIDWIN AIR BASE, Poland -- Paratroopers from U.S. Army Europe's 173rd Infantry Brigade Combat Team (Airborne) arrived in Poland April 23 to begin a training rotation with the Polish army's 6th Airborne Brigade, one of the brigade's sister units. The Soldiers are here with their NATO allies in Poland, Estonia, Latvia and Lithuania as part of recently announced exercises to demonstrate U.S. commitment to the alliance and increase interoperability between forces. (U.S. Army photo by Sgt. A.M. LaVey)