Lincoln's son was present at three presidential assassinations

You may be surprised to learn that President Abraham Lincoln's son, Robert Todd Lincoln, was on the scene of three presidential assassinations.

The first time was in 1865, when he was with his father after he was shot at Ford's Theatre.

In 1881, Lincoln, who was then serving as Secretary of War, arrived at Union Station shortly after President James A. Garfield had been shot.

Finally, in 1901, he was at the Pan-American Exposition in Buffalo, New York, when President William McKinley was assassinated.