It appears he is reading along as he is looking at the table/desk. Then looks ip and rocks the chair....yes, I think he is enjoying this part.
Right now my belief is he has some mental issues but it took some long term planning to get all the devices and equipment and then to execute the plans. To ask if any kids were hurt....I believe he knows right from wrong and drugs he took, then maybe did not take, took drugs again and mixed them up aided in his strange attitude.
I hope we can get a copy of this to read. The media seem to be on top of this so I bet they ask.