A flag flies at half-staff above the White House in Washington, early morning, Nov. 22, 2013. President Barack Obama ordered that flags be lowered at government buildings to mark the 50th anniversary of President John F. Kennedy's assassination.
The eternal flame flickers in the early morning light at the grave of John F. Kennedy at Arlington National Cemetery on Nov. 22, 2013, on the 50th anniversary of Kennedy's death.
A banner of John F. Kennedy is lowered to the stage before a ceremony to mark the 50th anniversary of his assassination, near Dealey Plaza in Dallas, Texas, Nov. 22, 2013.
Tatiana Schlossberg, granddaughter of President John F. Kennedy, stands still as the U.S. national anthem is played during a short ceremony at the JFK memorial, Runnymede, England, Nov. 22, 2013.