"It's not something I think about," Obama told ABC in an interview set to air in full next Friday. "Mainly, because we've got a Secret Service that does such an outstanding job every single day." "Obviously, tragedy reshaped the Secret Service in many ways, but they do an outstanding job, and it's, thankfully, not something that I spend a lot of time thinking about."
"When you think about the legacy of the Kennedy family, it has been part of all of modern American history, and it's been an incredible legacy, but JFK in particular, I think, captured the idealism, the ability to imagine and remake America to meets its ideals, in a way we haven't seen before or since," Obama said.
Obama: My safety is not something that I think about
Obama's remarks came as Americans remembered the traumatic event with Dallas' Dealey Plaza close to the spot where Kennedy was shot taking center stage once again on Friday.
Bells tolled, and after a brief pause, cadets from the Naval Academy sang "America the Beautiful." Historian David McCullough read excerpts from famous Kennedy speeches, CNN reported.
A new JFK monument also was unveiled, in the infamous section of land known as the "grassy knoll." The inscription on the monument was the final paragraph of the speech JFK intended to deliver at the Dallas Trade Mart on Nov 22, 1963.
A series of commemorations marked the day on Friday, including wreath-laying events in Kennedy's home town of Boston and at his Arlington National Cemetery gravesite.
In Washington, where flags flew at half-staff over the Capitol and White House, Kennedy's last living sibling, Jean Kennedy Smith, participated in the Arlington wreath-laying. Earlier, Attorney General Eric Holder visited the gravesite.
Moments of silence were also held at various other locations around the nation.