The nation paused on Friday to honor President John F. Kennedy.
It has been 50 years since President Kennedy was assassinated.
For the first time, the city of Dallas recognized the event that scarred it for years; thousands gathered in the rain at Dealey Plaza to mark the exact moment when President Kennedy was killed.
The anniversary, though somber, has also reignited all the conspiracy theories surrounding the President's death.
Now, investigators are using 21st century technology to analyze what really happened on November 22, 1963.
Ed Lavandera reports for OutFront