U.S. Air Force Master Sgt. Jefferey Saunders, 633rd Mission Support Group environmental manager, prepares to insert a drainage tube into a rain barrel during a rain harvesting workshop at Joint Base Langley-Eustis, Va., April 17, 2017. According to Ronald Best, 633rd Civil Engineer Squadron environmental flight pollution prevention manager, storm water run-off carries fertilizers, pesticides and pet waste to streams, and is the number one cause of pollution. (U.S. Air Force photo/Airman 1st Class Anthony Nin Leclerec)