Memorial Day 2015
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 21, 2015 in Arlington, Virginia.
Arlington National Cemetery
American flags placed by members of the 3rd U.S. Infantry Regiment at the graves of U.S. soldiers buried at Arlington National Cemetery in preparation for Memorial Day are seen May 21, 2015 in Arlington, Virginia.
Arlington National Cemetery
Members of the 3rd U.S. Infantry Regiment load American flags into their backpacks before placing them at the graves of U.S. soldiers buried at Arlington National Cemetery, in preparation for Memorial Day May 21, 2015 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.
Arlington National Cemetery
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 21, 2015 in Arlington, Virginia.
Arlington National Cemetery
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 21, 2015 in Arlington, Virginia.
Arlington National Cemetery
Members of the Third U.S. Infantry Regiment (The Old Guard) take part in a "Flags-In" ceremony, ahead of Memorial Day, at Arlington National Cemetery in Washington May 21, 2015.
In advance of Memorial Day, soldiers of the Old Guard place American flags at the foot of more than 228,000 graves.
Arlington National Cemetery
American flags are shown after being placed by members of the 3rd U.S. Infantry Regiment at the graves of U.S. soldiers buried at Arlington National Cemetery, in preparation for Memorial Day May 21, 2015 in Arlington, Virginia.
Washington, D.C.
"American Idol" Season 14 winner Nick Fradiani performs at the 26th National Memorial Day Concert on May 24, 2015 in Washington, D.C.
Washington, D.C.
Veterans attend the 26th National Memorial Day Concert on May 24, 2015 in Washington, D.C.
Washington, D.C.
Former Secretary of State Colin Powell greets disabled veteran Ted Strong at the 26th National Memorial Day Concert on May 24, 2015 in Washington, D.C.
Vietnam Veterans Memorial
Tokens and photographs are left by visitors to the Vietnam Veterans Memorial on Memorial Day weekend in Washington May 24, 2015.
Vietnam Veterans Memorial Wall
Veterans remember fallen comrades at the Vietnam Veterans Memorial Wall during the Rolling Thunder First Amendment Demonstration Run in Washington, D.C., on May 24, 2015.
Rolling Thunder is an annual event to pay tribute to current and former U.S. military members.
Vietnam Veterans Memorial
Visitors make a rubbing of a name on the wall of the Vietnam Veterans Memorial, on Memorial Day weekend in Washington, May 24, 2015.
Rolling Thunder
Riders cross the Memorial Bridge leading from Arlington Cemetery into Washington, D.C., as part of the Rolling Thunder First Amendment Demonstration motorcycle run, May 24, 2015.
The organizers of the annual event seek to highlight U.S. armed forces members believed to be prisoners of war or missing in action.
Manila American Cemetery and Memorial
A Philippine Army soldier plays Taps during a U.S. Memorial Day ceremony at the American cemetery in Taguig city, Manila, on May 24, 2015.
Kabul, Afghanistan
U.S. General John Campbell (left), commander of the NATO-led International Security Assistance Force (ISAF), carries a wreath of flowers during a ceremony to commemorate Memorial Day in Kabul, May 25, 2015.
More than 2,300 American service members have died in Afghanistan.
Waterbury, Conn.
The Memorial Day Parade passes through downtown Waterbury, Connecticut, on May 24, 2015.
Waterbury, Conn.
Parade-goers pay tribute at the Memorial Day Parade on May 24, 2015 in downtown Waterbury, Connecticut.
Across America towns and cities will be celebrating veterans of the United States Armed Forces and the sacrifices they have made.
Netherlands American Cemetery
Visitors carry flowers at the cemetery for U.S. war dead in Margraten, Netherlands, during Memorial Day observances on May 24, 2015.
Brooklyn
Uniformed re-enactors take part in a ceremony to mark the 150th anniversary of the end of the Civil War during Memorial Day commemorations at Green-Wood Cemetery in Brooklyn, New York, May 23, 2015.
Brooklyn
A member of the Boy Scouts of America places U.S. flags at graves at Cypress Hills National Cemetery in Brooklyn, New York on May 23, 2015.
New York City
Sailors, in New York City for Fleet Week, pause at the site of the National September 11 Memorial & Museum, May 22, 2015. A parade of ships along the Hudson ushered in Fleet Week events on Wednesday, the 27th annual Fleet Week celebration. A Memorial Day commemoration ceremony is to include the unfurling of a 100-foot American flag, a wreath laying, a rifle salute and the playing of taps.
Fleet Week
The U.S. Air Force Thunderbirds, consisting of six F-16 aircraft, perform a flyover over New York Harbor on May 22, 2015 in New York City. The flyover is part of the 2015 NYC Fleet Week festivities.
Arlington National Cemetery
Speaking before about 5,000 people on the hallowed grounds of Arlington National Cemetery, President Barack Obama called the burial place "more than a final resting place for fallen heroes. ... It is a reflection of America itself. A reflection of our history, the wars we've waged for democracy, the peace we've laid to preserve it.
"It is a reflection of our diversity, of people from different races and creeds who fought for the ideals that bind us as one nation."
Arlington National Cemetery
President Barack Obama lays a wreath at the Tomb of the Unknowns during the Memorial Day observance at Arlington National Cemetery in Arlington, Virginia May 25, 2015.
Arlington National Cemetery
President Barack Obama and Maj. Gen. Jeffrey Buchanan, Commanding General of the U.S. Army Military District of Washington, pay their respects after placing a wreath at the Tomb of the Unknowns, during Memorial Day ceremonies on May 25, 2015 at Arlington National Cemetery in Arlington, Va.
Tomb of the Unknowns
President Barack Obama and U.S. Army Military District of Washington Commanding General Jeffrey Buchanan bow their heads during the wreath-laying ceremony at the Tomb of the Unknowns, as part of the Memorial Day observance at Arlington National Cemetery in Arlington, Virginia on May 25, 2015.
Arlington National Cemetery
People stand for the playing of Taps during the Memorial Day observance at Arlington National Cemetery in Arlington, Virginia on May 25, 2015.
Honor Guard
A member of an honor guard holds his rifle as the motorcade carrying President Obama departs the Memorial Day observance at Arlington National Cemetery in Arlington, Virginia May 25, 2015.