If there is an EMERGENCY, call 9-1-1. Crimes in progress such as a burglary, robbery, a fight, or anything life threatening are considered an EMERGENCY.
When you call 9-1-1 the operator will know the location you are calling from. Often times, the crime is occurring elsewhere on the property from where you are calling. Be prepared to describe exactly where the crime is occurring so that the police can be effective and safe in responding to the situation, while minimizing the ability of the suspects to escape. When in doubt, use 9-1-1, but use common sense and proper discretion when deciding whether or not a situation is truly an EMERGENCY.