Flags at Arlington

A soldier places American flags if front of each headstone at Arlington National Cemetery in preparation for Memorial Day, in Arlington, Va., Thursday, May 26, 2011. (AP Photo/Jacquelyn Martin)

Kiki Harris of Ft. Lauderdale, Fla., visits the grave of her twin brother, Navy Seal Joshua Thomas Harris, who died serving in Afghanistan in 2008, as American flags on each headstone at Arlington National Cemetery in preparation for Memorial Day, in Arlington, Va., Thursday, May 26, 2011. (AP Photo/Jacquelyn Martin)

A soldier walks through Arlington National Cemetery checking that each headstone has received its American flag in preparation for Memorial Day, in Arlington, Va., Thursday, May 26, 2011. (AP Photo/Jacquelyn Martin)

Army Spc. Justin Immerso reaches for a flag to place in front of a head stone at Arlington National Cemetery in preparation for Memorial Day, in Arlington, Va., Thursday, May 26, 2011. (AP Photo/Jacquelyn Martin)

Marine Lance Cpl. Brandon Long, who was injured serving in Afghanistan, visits a friend's grave in Section 60 at Arlington National Cemetery as American flags are placed in front of each headstone in preparation for Memorial Day, in Arlington, Va., Thursday, May 26, 2011. (AP Photo/Jacquelyn Martin)

Members of the 3rd U.S. Infantry Regiment place American flags at the graves of U.S. soldiers buried at Arlington National Cemetery in preparation for Memorial Day May 26, 2011 in Arlington, Virginia. "Flags-In" has become an annual ceremony since the 3rd U.S. Infantry Regiment (The Old Guard) was offered to be an Army's official ceremonial

ARLINGTON, VA - MAY 26: Members of the 3rd U.S. Infantry Regiment place American flags at the graves of U.S. soldiers buried at Arlington National Cemetery in preparation for Memorial Day May 26, 2011 in Arlington, Virginia. 'Flags-In' has become an annual ceremony since the 3rd U.S. Infantry Regiment (The Old Guard) was designated to be an Army's official ceremonial unit in 1948. Every available soldier in the 3rd U.S. Infantry Regiment participates in these events. (Photo by Win McNamee/Getty Images)

Members of the 3rd U.S. Infantry Regiment place American flags at the graves of U.S. soldiers buried at Arlington National Cemetery in preparation for Memorial Day May 26, 2011 in Arlington, Virginia. "Flags-In" has become an annual ceremony since the 3rd U.S. Infantry Regiment (The Old Guard) was offered to be an Army's official ceremonial unit in 1948. Every available soldier in the 3rd U.S. Infantry Regiment participates in these events.

ARLINGTON, VA - MAY 26: Members of the 3rd U.S. Infantry Regiment place American flags at the graves of U.S. soldiers buried at Arlington National Cemetery in preparation for Memorial Day May 26, 2011 in Arlington, Virginia. "Flags-In" has become an annual event since the 3rd U.S. Infantry Regiment (The Old Guard) was appointed an Army official ceremonial unit in 1948. Every available soldier in the 3rd U.S. Infantry Regiment participates in these annual ceremonies. (Photo by Win McNamee/Getty Images)

U.S. Army Private Philip Wong places a flag at the headstone of Sgt. Paul Dumont at Arlington National Cemetery in preparation for Memorial Day May 26, 2011 in Arlington, Virginia. "Flags-In" has become an annual ceremony since the 3rd U.S. Infantry Regiment (The Old Guard) was offered to be an Army's official ceremonial unit in 1948. Every available soldier in the 3rd U.S. Infantry Regiment participates in these events.

U.S. Army Col. David Astin kneels at the headstone of a fellow solder he fought with in Afghanistan in Section 60 at Arlington National Cemetery during Flags-In May 26, 2011 in Arlington, Virginia. "Flags-In" has become an annual ceremony since the 3rd U.S. Infantry Regiment (The Old Guard) was offered to be an Army's official ceremonial unit in 1948. Every available soldier in the 3rd U.S. Infantry Regiment participates in these events.

Members of the 3rd U.S. Infantry Regiment place American flags at the graves of U.S. soldiers buried at Arlington National Cemetery in preparation for Memorial Day May 26, 2011 in Arlington, Virginia. "Flags-In" has become an annual ceremony since the 3rd U.S. Infantry Regiment (The Old Guard) was offered to be an Army's official ceremonial unit in 1948. Every available soldier in the 3rd U.S. Infantry Regiment participates in these events. ges)

Members of the 3rd U.S. Infantry Regiment place American flags at the graves of U.S. soldiers buried at Arlington National Cemetery in preparation for Memorial Day May 26, 2011 in Arlington, Virginia. "Flags-In" has become an annual ceremony since the 3rd U.S. Infantry Regiment (The Old Guard) was designated to be an Army's official ceremonial unit in 1948. Every available soldier in the 3rd U.S. Infantry Regiment participates in these events.

Members of the 3rd U.S. Infantry Regiment place American flags at the graves of U.S. soldiers buried at Arlington National Cemetery in preparation for Memorial Day May 26, 2011 in Arlington, Virginia. "Flags-In" has become an annual ceremony since the 3rd U.S. Infantry Regiment (The Old Guard) was designated to be an Army's official ceremonial unit in 1948. Every available soldier in the 3rd U.S. Infantry Regiment participates in these events.

Members of the 3rd U.S. Infantry Regiment place American flags at the graves of U.S. soldiers buried at Arlington National Cemetery in preparation for Memorial Day May 26, 2011 in Arlington, Virginia. "Flags-In" has become an annual event since the 3rd U.S. Infantry Regiment (The Old Guard) was appointed an Army official ceremonial unit in 1948. Every available soldier in the 3rd U.S. Infantry Regiment participates in these annual ceremonies.

Members of the 3rd U.S. Infantry Regiment place American flags at the graves of U.S. soldiers buried at Arlington National Cemetery in preparation for Memorial Day May 26, 2011 in Arlington, Virginia. "Flags-In" has become an annual ceremony since the 3rd U.S. Infantry Regiment (The Old Guard) was designated to be an Army's official ceremonial unit in 1948. Every available soldier in the 3rd U.S. Infantry Regiment participates in these events.

Members of the 3rd U.S. Infantry Regiment place American flags at the graves of U.S. soldiers buried at Arlington National Cemetery in preparation for Memorial Day May 26, 2011 in Arlington, Virginia. "Flags-In" has become an annual event since the 3rd U.S. Infantry Regiment (The Old Guard) was appointed an Army official ceremonial unit in 1948. Every available soldier in the 3rd U.S. Infantry Regiment participates in these annual ceremonies.

Members of the 3rd U.S. Infantry Regiment place American flags at the graves of U.S. soldiers buried at Arlington National Cemetery in preparation for Memorial Day May 26, 2011 in Arlington, Virginia. "Flags-In" has become an annual ceremony since the 3rd U.S. Infantry Regiment (The Old Guard) was offered to be an Army's official ceremonial unit in 1948. Every available soldier in the 3rd U.S. Infantry Regiment participates in these events.

Members of the 3rd U.S. Infantry Regiment place American flags at the graves of U.S. soldiers buried at Arlington National Cemetery in preparation for Memorial Day May 26, 2011 in Arlington, Virginia. "Flags-In" has become an annual ceremony since the 3rd U.S. Infantry Regiment (The Old Guard) was offered to be an Army's official ceremonial unit in 1948. Every available soldier in the 3rd U.S. Infantry Regiment participates in these events.