Volunteers from the Fort Eustis Fire Department place sandbags at a Civil War earthworks site on Fort Eustis during Earth Week events at Joint Base Langley-Eustis, Va., April 17, 2017. Preserving this earthwork was part of JBLE’s Earth Week celebration, which also included shoreline planting, boat tours, nature trail maintenance and a rain-barrel workshop. (U.S. Air Force photo/Tech. Sgt. Katie Gar Ward)