Hi rayCoffin,
I have already commented on this topic.
The guy that falls first is looking to his right, he is seeing all of the suspicious activity down by building 6 and preventively drops to the ground. He is not dogging a bullet. He hits the floor of the bleachers making everybody lose their balance. The human brain reacts very very quickly to balance issues and therefore all the people on the back row move to catch their balance and they are not dogging a bullet.
My opinion is that John interpreted this activity in a wrong matter and sent him looking in the woods……