Fight as a last resort and only when your life is in imminent danger.
Attempt to incapacitate the shooter.
Act with as much physical aggression as possible.
Improvise weapons or throw items at the active shooter.
Commit to your actions...your life will depend on it.
The first officers to arrive on scene will not stop to help the injured. Expect rescue teams to follow initial officers. These rescue teams will treat and remove the injured. Once you have reached a safe location, you likely will be held in that area by law enforcement until the situation is under control and all witnesses have been identified and questioned. Do not leave the area until law enforcement authorities have instructed you to do so.
When you call for help, prepare to give the dispatcher the following information:
Location of incident (be as specific as possible)
Number of shooters (if known)
Identification and or Description of shooter(s)
Number of persons involved (victims and or perpetrators) as accurate as possible
Your Name
Your current location
If you are not sure if it is safe to come out: just stay calm, stay put, stay quiet, and stay alive.
U.S. Department of Justice Federal Bureau of Investigation Active Shooter Event Quick Reference Guide
https://kysu.edu/administration-governance/president/safety-security/active-shooter-emergency-plan/
Campus Police Department
Campus Community At Large
Vice President for Student Engagement
University Police Department