A man, who declined to give his name due to security concerns, touches the headstone of Petty Officer 1st Class Aaron Carson Vaughn, U.S. Navy Seal, in Section 60 of Arlington National Cemetery, December 14, 2013 in Arlington, VA. Carson died  August 6, 2011 in Wardak province, Afghanistan. Volunteers and families of the fallen placed thousands of remembrance wreaths on headstones throughout the cemetery on National Wreaths Across America Day. (Photo by Drew Angerer/Getty Images)

From L to R, Lt. Maria Hyrczyk, Capt. Jaimie Laib, and Capt. Stephanie Grunzey embrace in Section 60 of Arlington National Cemetery, December 14, 2013 in Arlington, VA. The three are in the U.S. Air Force, stationed at Joint Base Langley-Eustis,  and had just layed a wreath at the headstone of their fallen friend Capt. Thomas Graymith.  (Photo by Drew Angerer/Getty Images)

Vera Adcock, mother of fallen Army Capt. Shane Timothy Adcock, gathers with family (from L to R, Isaac Hathaway, Isaiah Hathaway, and Victoria Whitt) at Adcock's headstone in Section 60 of Arlington National Cemetery, December 14, 2013 in Arlington, VA.  Adcock died on October 11, 2006, in Hawijah, Iraq, from injuries suffered from enemy grenade fire. (Photo by Drew Angerer/Getty Images)

Sean Gearhart plays bagpipes at Arlington National Cemetery, December 14, 2013 in Arlington, VA. (Photo by Drew Angerer/Getty Images)