John Wilson, Air Force Civil Engineer Center installation support team restoration program manager, shovels mulch at Fort Eustis, Va., April 21, 2015. The mulch was put into drains as part of a waterway restoration project for Earth Week. The mulch is a part of clean filtering processes that removes dangerous materials from reaching local Virginia waterways. (U.S. Air Force photo by Staff Sgt. Natasha Stannard/Released)