You just said there was a guard at the car a few feet from the front door...And the lady in the video says someone escorted her and the other lady to safety...Now you say they were all in the school...Can't be both now, can it...
I didn't say that they started guarding it when they all got on the scene. They clearly searched it and found the shotgun and then went into the school.
Did you think they were going to stop at the car and put up the yellow tape and have a picnic there while there was still a live shooting scene in the school???
Cmon, Iscool, you got better sense than that.