Marines assist the Environmental Compliance and Protection Department clear invasive vegetation at the percolation ditch wetland during Malama Ka Aina, Dec. 3, 2013. During Malama Ka Aina, a biannual event at Marine Corps Base Hawaii, all units aboard the base participate in major cleaning efforts, from retrieving garbage in the waterways to clearing weeds and sweeping the sidewalks. (U.S. Marine Corps photo by Kristen Wong)