These two 19-year old women were hit by a passenger rail car and were both simultaneously knocked off of the black,steel I-beam you see at the bottom left of the photo. The women are in the process of actually crashing into the water at the instant of this exposure. Notice that the blue beach towel is still in THE AIR,since it wafted down like a towel or a leaf will do.But the people, being people, fell much more rapidly than the towel did. That's why the towel is still dry. The splashing water plume from their impact has not yet fully landed. The two women were almost directly below my camera position as I leaned over the open railroad car's window and shot this picture. I had the Canon 20D in S focus mode,confound it, so this is the very FIRST exposure lock I could get! I tried 1 or 2 seconds earlier to make exposures, but in S-focus mode the Canon simply could not lock focus! Arrgh!. I was extremely,extremely annoyed that I could not get a focus lock from the moving train earlier,and was so infuriated that I didn't have my D2x with me which NEVER goes into S-focus mode. S-focus mode is unneeded with a real pro camera like a D1,D1h,or D2x, since the focus lock system and focus controll SWITCH is so much better and more real-world than Canon's toy-like EOS button + LCD confirmation focus control rigamarole.Nikon uses a single SWITCH....Canon requires you to press a button and spin a wheel and confirm the setting on an LCD. Not exactly an engineering triumph with Canon WRT to how to switch a Goddamned AF system into where it OUGHT to go with the press of a single,dedicated SWITCH that can be switched to C-mode focus even in the DARK. Anyway, this is the FIRST shot the frickin' 20D could get a focus lock on! Hilariously bad camera design made me miss the prior scenes of this incident.Had I been in C-mode, or had a real lens on a (like an AF-S) I could have caught five to ten frames of the 2 seconds leading up to this whole inident, but I was just there with my snapshot camera, the little 20D. My 20D had BTW, experienced a mysterious a Err 99 lockup about two minutes before this incident began, the second one I have had since Feb 2005 when I bought the 20D, so about one Err 99 failure to shoot incident every three months and 13 days....