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 visited the CDC in order to help the children plant a tree in preparation for National Arbor Day, April 27. (U.S. Air Force photo by Senior Airman Jarad A. Denton/Released)