A really important message in Dave's excellent (though frustratingly inconclusive) PPT from P1 and P2: post accident, write down EVERYTHING you can remember ASAP.

In my experience, spectators should do the same. I don't care how observant and resilient and aware you think you are, you'll start forgetting things and molding facts to fit into theories almost from the beginning. Especially if others witnessed the same accident, write down what YOU saw--in detail.. You can flesh them out and organize them later and even compare notes--which may not agree completely with others' accounts--but keep your ORIGINAL observations. Our minds work in mysterious ways.

Chip Bearden
JB