The Justice Department announced the formation on Tuesday of “cross-jurisdictional firearms trafficking strike forces” in five major U.S. cities to track and stop the illegal transfer of firearms.

The strike forces, part of President Joe Biden’s strategy to counter spiking violent crime rates across the nation, will launch within 30 days in the Chicago, Los Angeles, New York, San Francisco, and Washington, D.C., metropolitan areas in coordination with the Bureau of Alcohol, Tobacco, Firearms, and Explosives and other local law enforcement offices.