New film of presidential limousine on its way to Parkland

I have never seen this before.  It is only 27 seconds long and is over exposed to the sunlight.

This scene below is new to me. That's Clint Hill lying almost head to foot across the back of the limo.

And this one is about 16 seconds into it.  It's a really short clip that is repeated at a slower speed after running at a normal speed. 

And at 19 seconds