Minjae Park, Chief of Geotechnical & Environmental Engineering Branch, and Jae Ung Yoon, Civil Engineer, explain the science behind the concrete used at USACE FED’s construction sites during the U.S. Corps of Engineers – Far East District hosted its first “Bring Your Kid to Work Day” event Feb. 14, 2025, at Camp Humphreys, South Korea, in celebration of Engineers Week. (U.S. Army photo by Ok Ki Kim)