U.S. Air Force Col. Korvin Auch, 633rd Air Base Wing commander, speaks to children at the Langley Air Force Base, Va., child development center, April 25, 2012. Auch discussed the importance of taking care of the planet before helping the children plant a tree in honor of National Arbor Day. (U.S. Air Force photo by Senior Airman Jarad A. Denton/Released)