The Nationwide Suspicious Activity Reporting (SAR) Initiative (NSI) is a joint collaborative effort by the U.S. Department of Homeland Security, the Federal Bureau of Investigation, and state, local, tribal, and territorial law enforcement partners. This initiative provides law enforcement with another tool to help prevent terrorism and other related criminal activity by establishing a national capacity for gathering, documenting, processing, analyzing, and sharing SAR information.

Remain vigilant to suspicious activity, and report any concerns to local law enforcement. Some examples of suspicious activity include:

• Individuals or actions which are out of place (e.g. improperly dressed for the weather).
• Unusual or prolonged interest in security measures, entry/exit points or unattended vehicles.
• Purposely placing objects in sensitive or vulnerable areas to observe security response.
• Acting nervous or suspicious, possibly mumbling to themselves to sweating heavily.

Check out these Indicators and Behaviors (pdf) which may be cause for additional inquiry (possible suspicious activity) 

Check out these Indicators and Examples (pdf) for suspicious activity reporting

Report

The more local your report, the sooner that law enforcement will respond.

Report suspicious activity to the Allen County Sheriff's Deparment

Report suspicious activity to the Allen County Office of Homeland Security

Report suspicious activity to the Indiana Intelligence Fusion Center

Report a tip to the FBI

Law Enforcement and Hometown Security Partners

Take the online SAR Training