I tried to capture some of the demo's, but I tell you, that is a hard thing to do without a tripod!!!! I even tried to take some basic video, but even that didn't turn out as well as I had hoped. Here is an F-15 doing a 360 degree turn in full afterburner -
http://www.veoh.com/videos/v151938334kPncNYZ - Not very good vid. I had some sort of glare going on from the sun.
-S
An F-15C in full burner:
P-51D: