U.S. Air Force Staff Sgt. Carl Slater, 1st Maintenance Squadron ammo supervisors, rakes dead vegetation from the shoreline as part of Earth Week at Langley Air Force Base, Va., April 24, 2015. Along with ridding the area of dead vegetation, Airmen also planted new marsh. The marsh prevents erosion, which protects the inland area. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)