Airman 1st Class Lorena Montoya, 11th Mission Support Squadron, prunes shrubs and other invasive plants along a walking trail Oct. 25 at Kenilworth Aquatic Garden in Washington, D.C. Airman Montoya was one of 176 servicemembers who volunteered at the garden as part of a joint service project for national "Make a Difference Day." (U.S. Air Force photo/R. Michael Longoria)