Fusion centers are state- and local-run intelligence-sharing hubs that collect, analyze, and distribute information about threats and crime to police, public-safety agencies, and federal partners. Their main purpose is to improve information sharing so authorities can better detect, prevent, and respond to terrorism, criminal activity, and other public-safety threats.bja.ojp+1
The Department of Homeland Security says there are 80 fusion centers in the U.S. network. DHS also says there is at least one fusion center in every U.S. state and territory.brennancenter+1
They are spread across the country, usually one serving an entire state and sometimes one serving a major urban area. DHS maintains a current page with fusion center locations and contact information, since the exact list can change over time.dhs
They bring together local, state, tribal, territorial, federal, and sometimes private-sector representatives to share tips, reports, and intelligence. In practice, that means they may help with terrorism threats, gangs, drug trafficking, cyber threats, and other hazards.bja.ojp+3
If you want, I can also give you a state-by-state list of the fusion centers.