Here's some stuff:
3.“Those willing to take the shooter down should rush the shooter and keep coming until he is down. Push people down or out of the way, even run over children while shouting commands, “Get down, do not run, get on the floor!”
4. Those who choose to fight should focus on the weapon not the person. Control the weapon. After the active shooter has been subdued, march everyone out to a safe place in the manner described above. Someone needs to call for medical assistance at this point. [Edit: I would call at first detection of a shooter!]
5. When LEOs arrive all weapons should already be put away if possible. Make sure not to pick up the shooter’s weapon but keep your foot on it or secure it if there is a chance someone may pick it up. Do what the police tell you to do. Identify the wrongdoer to the police and make sure the police know that he had to be stopped in order to prevent innocent people from becoming victims. Point out evidence such as spent casings, weapons, etc. but do not provide details without a lawyer present.
http://firearmslawyer.net/blog/index.php/all/2009/01/09/p185University STAY response advisory:
Secure your area, lock or barricade doors and windows, close blinds, prevent anyone/ anything from accessing occupants.
Take cover, hide, stay out of sight.
Advise others so that they can take steps to protect themselves; await further information.
You must take measures to protect your safety. Police will be busy with the actual response to the incident and will not be able to direct your personal actions unless you are actively involved.
https://www6.miami.edu/public-safety/Eme...ASE-2-15-10.pdf