Jennifer Armstrong (right), a Norfolk District project manager, shows Jo-Ellen Darcy, the assistant secretary of the Army for civil works, fossilized oyster shell stored at the district's Craney Island Dredge Material Management Area in Portsmouth, Va. The shell is destined to be used in Corps sanctuary oyster reefs in the Elizabeth River as part of the Craney Island Eastward Expansion project environmental mitigation plan. The mountainous piles of shell were obtained from the Commonwealth of Virginia through an agreement between the Norfolk District and the Virginia Marine Resources Commission. (U.S. Army photo/Patrick Bloodgood)