Wreaths Across America arrives at Arlington National Cemetery (5 images)

A volunteer places a Christmas wreath on a grave at Arlington National Cemetery as part of the annual "Wreaths Across America" event in Arlington, Va., on December 16, 2017. The event takes place at national and state veterans cemeteries across the country. Photo by Erin Schaff/UPI

Volunteers look for headstones to place Christmas wreaths at Arlington National Cemetery as part of the annual "Wreaths Across America" event in Arlington, Va., on December 16, 2017. Volunteers for the group have placed wreaths annually for 25 years. Photo by Erin Schaff/UPI

Christmas wreaths placed by volunteers are seen on the graves at Arlington National Cemetery as part of the annual "Wreaths Across America" event in Arlington, Va., on December 16, 2017. Last year, the organization placed more than 1.2 million wreaths at more than 1,200 cemeteries nationwide. Photo by Erin Schaff/UPI

Navy Captain Michael Leuttrell salutes a grave after placing a Christmas wreath on the headstone at Arlington National Cemetery as part of the annual "Wreaths Across America" event in Arlington, Va., on December 16, 2017. Photo by Erin Schaff/UPI