If you witness violent behavior, move to a safe area. Report the threat to the police by calling 911. Provide as much information as you can, including:
Location of incident and type of violence
Description of person(s) involved (gender, age, clothing, appearance, weapons).
Any information about victims (number of victims, appearance, condition).
Direction of travel (where were the suspects last seen, where were they going).
If you are confronted by a violent person:
Try to maintain a calm demeanor. Survey your surroundings for escape routes.
If the violent person talks to you, speak as clearly and confidently as you can.
Avoid challenging or debating the person.
Avoid confrontation with the violent person unless you feel your life or the lives of others are in danger. If you feel there is immediate danger, you'll have to decide what is best to do. This may include fighting or fleeing.
Think about the violent incidents you've heard about in the media. Learn from the responses or lack of responses of the victims.
Think about what your options would be if you were placed in a situation of violence. Thinking about your options ahead of time and discussing them with others may help you make better decisions under terrifying circumstances.
Response to an active shooter:
If possible, call 911.
Lock or barricade your door. Block the door using anything available.
Stay behind solid objects, away from the door as much as possible.