U.S. Army Corps of Engineers photo by Jennifer McFadden Allen Lt. Col. Damon A. Delarosa (left) assumed command of the U.S. Army Corps of Engineers, Walla Walla District, during a July 8, 2016, ceremony at the Marcus Whitman Hotel and Conference Center in downtown Walla Walla. Brig. Gen. Scott A. Spellmon (right), commander of the Corps’ Northwestern Division, presided over the ceremony. (U.S. Corps of Engineers photo)