The answer to that is easy, if not sad. There were dozens of first responders on the scene — Newtown and State Police, firemen from most if not all of the companies in town (5), and EMTs and other medical personnel. As the incident progressed, police departments from around the state sent people to the scene.
I was in Stamford when everything happened and I was behind a speeding police car from another town for a while on my way back. That particular town sent two SWAT team members.
All of those people had nothing to do, as everyone was dead.
So they very well could have walked around in circles, especially since any wide circle around the perimeter would put you at the Sandy Hook firehouse, where parents and first responders were gathering.
I appreciate your on-site observations, and that could very well be. But no one in that video seems to be doing ANYTHING. They’re definitely all walking around in unison, but no one seems to have a purpose at all. And many are indeed just circling the building. Just seems very odd.
Thank you for your commentary! Well done!
We had a school shooting about a year ago in Reno. The shooter and a teacher dead; within a few minutes it was over. Cops were pouring in for hours afterward from over 100 miles away.