Brig. Gen. Patrick Higby, 81st Training Wing commander, plants a tree in honor of Arbor Day along with a preschool class at the child development center Feb. 21, 2014, at Keesler Air Force Base, Miss. The Tree City USA award was presented to Keesler for the 21st consecutive year for its tree management program. (U.S. Air Force photo by Kemberly Groue)