• One shows never before seen footage of a young president in his final hour of life, nearly half a century ago. Another, searing aerial snapshots of, likely thousands in their last seconds of life, nearly a decade ago.

    All the more remarkable since both were revealed only days apart.

    Those iconic images of John Kennedy in 1963 released just this week; those horrific images of the collapsing towers in 2001 only becoming public last week.

    Leaving aside the helicopter views of a collapsing World Trade Center were only deemed relevant now, or that 61-year-old Ward Warren thought the film he took as a teenager playing hooky to see a president come to town was deemed worthy now — here they are now.

    New angles on familiar tragedies; one before the tragedy hit, the other during it so many years later.

    Ward Warren told the curator of The Sixth Floor Museum in Dallas that he had nothing new to offer on the assassination, but he had something very special before the assassination.

    He was right.

    Just like New York City police helicopter pilot Greg Senendinger — a photography enthusiast — no doubt thought he has interesting still images of a moving tragedy decades later.

    He was right too.

    And it got me thinking: What other old films and photographs are hidden in someone's basement — dismissed by those who took them or forgotten by family members perhaps unaware of them — until someone, somewhere opens a box or dusts off an attic shelf and stumbles upon them and then shows them?

    And we see it all again, and remember the pain all over again; reminded that not only does history repeat itself, our various angles on it repeat it even more.

    Watch Neil Cavuto weekdays at 4 p.m. ET on "Your World with Cavuto" and send your comments to cavuto@foxnews.com