Col. Rose Jourdan, 460th Mission Support Group commander, receives a sticker from Keith Wood, forester for the Community Forestry Division Colorado State Service during an Earth and Arbor Day celebration April 21, 2016, on Buckley Air Force Base, Colo. This year celebrated Buckley’s 11th year of qualifying for Tree City USA, a nationwide movement that provides the framework necessary for communities to manage and expand their public trees. (U.S. Air Force photo by Senior Airman Racheal E. Watson/Released)