911 is the primary vehicle for reporting a crime or suspicious activity that warrants a police officer responding. DO NOT call 311 or call the District HQ, if you want an actual police officer to respond. DO NOT post on social media (Facebook, Nextdoor, Twitter, etc.) before reporting to the police. Patrol cars are dispatched through the 911 system and reported criminal activity is mapped based on these calls. Remember that your call is prioritized based on what you tell the 911 operator and what s/he enters into the computer. Response time is affected by the level of priority, officers available, and call volume.