Can anyone link to the harassment/threats he mentions? (Mostly the latter, I'm sure there was much harassment but I have yet to see any real "threats").
It seems as if the powers that be decided student safety was less important than apprehending any possible suspect...
If there is a gunman I think you would want students spread out among their classrooms. If there's a major panic there can be deaths from the panic not to mention the danger of a gunman in a hallway as students try to escape.