U.S. Air Force Col. David Stanfield, 633rd Mission Support Group commander, speaks to students from the Child Development Center before planting trees during an Arbor Day event at Joint Base Langley-Eustis, Va., April 21, 2017. Arbor Day originated in Nebraska City, Neb. on April 10, 1872, when J. Sterling Morton coordinated the planting of more than 1 million trees. (U.S. Air Force photo/Senior Airman Derek Seifert)