Army Engineer Research and Development Center Installation Operations Command chemical engineer Bobby McComas (center) demonstrates the EM River model, a table-top visualization of riverine processes, to fourth grade students April 20, 2022, at Bowmar Avenue Elementary School in Vicksburg, Miss., during a visit to talk about Earth Day. ( Army Corps of Engineers photo)

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Keywords: .., army, center, development, education, engineer, erdc, research, stem