Arlington National Cemetery

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First lady Michelle Obama and Dr. Jill Biden, stand with children of fallen service members who traveled to Washington to participate in the Tragedy Assistance Program for Survivors (TAPS) 20th Annual Good Grief Camp as they wait for President Barack Obama to speak at Arlington National Cemetery in Arlington, Va., Monday, May 26, 2014, in honor of Memorial Day. (AP Photo/Susan Walsh)

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A soldier of the 3rd U.S. Infantry Regiment, also known as The Old Guard, places flags at grave sites at Arlington National Cemetery in Arlington, Va., Thursday, May 22, 2014, as part of the annual "Flags-In" ceremony in preparation for Memorial Day. (AP Photo/Cliff Owen)

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Soldiers of the 3rd U.S. Infantry Regiment, also known as The Old Guard, places flags at grave sites at Arlington National Cemetery in Arlington, Va., Thursday, May 22, 2014, as part of the annual "Flags-In" ceremony in preparation for Memorial Day. (AP Photo/Cliff Owen)

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With the Lincoln Memorial and the Washington Monument is the background, soldiers of the 3rd U.S. Infantry Regiment, also known as The Old Guard, places flags at two of the older grave sites at Arlington National Cemetery in Arlington, Va., Thursday, May 22, 2014, as part of the annual "Flags-In" ceremony in preparation for Memorial Day. (AP Photo/Cliff Owen)

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A soldier of the 3rd U.S. Infantry Regiment, also known as The Old Guard, places flags at grave sites at Arlington National Cemetery in Arlington, Va., Thursday, May 22, 2014, as part of the annual "Flags-In" ceremony in preparation for Memorial Day. (AP Photo/Cliff Owen)

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A soldier with the 3rd U.S. Infantry Regiment, also known as The Old Guard, places a flag at a grave site at Arlington National Cemetery in Arlington, Va., Thursday, May 22, 2014, as part of the annual "Flags-In" ceremony in preparation for Memorial Day. (AP Photo/Cliff Owen)

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A soldier of the 3rd U.S. Infantry Regiment, also known as The Old Guard, places a at flag at grave site at Arlington National Cemetery in Arlington, Va., Thursday, May 22, 2014, as part of the annual "Flags-In" ceremony in preparation for Memorial Day. (AP Photo/Cliff Owen)

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** FILE ** Soldiers of the 3rd U.S. Infantry Regiment, also known as The Old Guard, place flags at grave sites at Arlington National Cemetery in Arlington, Va., Thursday, May 22, 2014. (AP Photo/Cliff Owen)

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Soldiers of the 3rd U.S. Infantry Regiment, also known as The Old Guard, march in formation before placing flags at every grave site, Thursday, May 22, 2014, at Arlington National Cemetery in Arlington, Va. as part of the annual "Flags-In" ceremony in preparation for Memorial Day. (AP Photo/Cliff Owen)

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Air Force Master Sgt. Tessa M. Fontaine sits at the Women in Military Service for America Memorial after being honored during a wreath laying ceremony for service women at Arlington National Cemetery Tuesday. (Andrew Harnik/The Washington Times)