President Obama lays wreath at Kennedy gravesite (16 images)

President Barack Obama, First Lady Michelle Obama, Former President Bill Clinton and Former Secretary of State Hillary Clinton lay a wreath at the gravesite for President John F. Kennedy at Arlington National Cemetery in Arlington, Virginia, November 20, 2013. This Friday will mark the 50th anniversary of the assassination of President Kennedy. UPI/Pat Benic

President Barack Obama (2nd-L), First Lady Michelle Obama (L), Former President Bill Clinton (2nd-R) and Former Secretary of State Hillary Clinton lay a wreath at the gravesite for President John F. Kennedy at Arlington National Cemetery in Arlington, Virginia, November 20, 2013. This Friday will mark the 50th anniversary of the assassination of President Kennedy. UPI/Pat Benic

U.S. Marine Corporal Mark Paradis, with Taps For Veterans, plays Taps at President John K. Kennedy's grave during the Bugle Call to Remember in honor of the the 50th anniversary of the sounding of Taps at the funeral of President John F. Kennedy, at Arlington National Cemetery in Arlington, Virginia on November 16, 2013. The event paid tribute to JFK and to Army Bugler Sgt. Keith Clark who played Taps at President Kennedy's funeral in 1963. November 22 will make the 50th Anniversary of President John F. Kennedy's assassination. UPI/Kevin Dietsch

Callie Freeman, 2, of Columbia, Maryland visits the eternal flame and grave of President John Fitzgerald Kennedy with her family at Arlington National Cemetery in Arlington, Virginia on November 16, 2013. November 22 will make the 50th Anniversary of President John F. Kennedy's assassination. UPI/Kevin Dietsch