One of the most surprising events I ever witnessed in National racing happened within the frame of this picture. Danny "Magoo" Chandler #594 had the inside holeshot in the first moto. Notice the AMA Official in the white at the top center of the photo. You can see the track comes down right in this area and would pop riders back up onto the front straight at the completion of a lap.
Magoo was in the lead and flying when he came around on the first lap. For some reason the official never moved and was clipped hard by Chandler while he was in the air. I know the officials arm was broken and he was knocked down but I guess I was too shocked to do anything but watch because I don't have any pictures of the incident. What happened next was even more surprising. Chandler managed to keep from going down after the impact and kept the bike upright and steady. While still in the lead as a rookie he pulled off to the side of the track tossed his bike aside and ran back to make sure the official was ok. How many young pros today would do the same?