Airman 1st Class Holly Haupu, a lodging apprentice assigned to the 28th Force Support Squadron, passes a Christmas tree down a line during Ellsworth’s ninth annual Trees for Troops event outside the Outdoor Recreation Center at Ellsworth Air Force Base, S.D., Dec. 2, 2016. This national program started with a simple idea of tree farmers wanting to find a way to give back to our nation’s military service members. (U.S. Air Force photo by Airman 1st Class Denise M. Jenson)