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Capt. Sam McAvoy of the Royal Engineers participated in a tour of the Washington Aqueduct's Dalecarlia Water Treatment Plant on January 30, 2026. As part of his nine-month placement with the U.S.

Army Corps of Engineers Baltimore District, he is undergoing professional training. The tour, led by Lt. Col. Mark Pollak and guided by Trina Littlejohn, showcased the water treatment process, highlighting the engineering significance of the facility.