Hanscom observes National Arbor Day
Col. Roman Hund, installation commander, with help from Hanscom Middle School students, plant a pear tree as part of Arbor Day activities at Hanscom Air Force Base, Mass., May 4. Arbor Day is typically celebrated the last Friday in April and is used to recognize how trees enrich people's lives. (U.S. Air Force photo by Linda LaBonte Britt)