Shannon Reinheimer, U.S. Army Corps of Engineers Norfolk District environmental scientist, volunteers as part of the district oyster reef team hosting Norfolk Christian Schools fifth-grade students with oyster restoration on the Elizabeth River near Fort Norfolk, Va., Nov. 1, 2018. The monthly field trip to the reef offers a lesson in science, technology, engineering and math while helping to bolster the struggling oyster population in the area. (U.S. Army photo by Andria Allmond