Good Observations.
Also all the people later interviewed in the way you describe are prior shown in the pictures from that day.
They cycle the same people over and over.

They all appear at the same corner around the firehouse with their handlers:


Its so blatant at first sight and when you look closely it gets absurd..

Im not so sure that anyone died. There is no evidence at all. Most of the victims and parents are identified as actors. The medical examiner etc. they are all in it too..
Its so much material..