Arlington National Cemetery

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Visitors pay tribute at the flower-bedecked grave of President John Fitzgerald Kennedy at Arlington National Cemetery in November, 1963. (Associated Press)

Mrs. Martha Louis and Rev. Jesse Jackson watch as the casket of Joe Louis is carried by a honor guard to the burial site at Arlington National Cemetery. Louis was buried at Arlington National Cemetery April 21, 1981 after President Ronald Reagan waived regulations. (AP Photo/ Bob Daugherty)

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Jack Lechner, Deputy Superintendent of Arlington National Cemetery, center, and Army Command Sgt. David O. Turnbull, right, stand during the playing of "Taps" after a wreath was laid at the gravesite of Army Pvt. William Christman, who was the first military burial at the cemetery, marking the beginning of commemorations of the 150th anniversary of Arlington National Cemetery in Arlington, Va., Tuesday, May 13, 2014. Christman, 20, enlisted in the 67th Pennsylvania Infantry and was hospitalized for measles five weeks later, dying on May 11, 1864 and buried at Arlington on May 13. (AP Photo)

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Wreaths from Arlington National Cemetery and the Historical Association of Tobyhanna Township, Pa., along with a stone of remembrance were placed at the gravesite of Army Pvt. William Christman, who was the first military burial at the cemetery, marking the beginning of commemorations of the 150th anniversary of Arlington National Cemetery in Arlington, Va., Tuesday, May 13, 2014. Christman, 20, enlisted in the 67th Pennsylvania Infantry and was hospitalized for measles five weeks later, dying on May 11, 1864 and buried at Arlington on May 13, 1864. (AP Photo)

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2013 Virginia Press Association 2nd Place winner- Feature photo Thania Sayne of Effingham, Ill., cries at the grave of her late husband U.S. Army Sgt. Timothy Douglas Sayne the day before what would have been their three year anniversary at Arlington National Cemetery, Washington, D.C., Wednesday, October 16, 2013. Lt. Col. Sayne was killed in Afghanistan in 2011 and also leaves behind two young sons.