ICE wouldn't be at the top of my list for federal agencies that want to listen to NYPD or Newark PD traffic.
why do you say that? it could be some sort of task force thing or something.
google brought this up:
http://www.ice.gov/national-gang-unit
In 2005, ICE initiated Operation Community Shield, an international law enforcement initiative that combines Homeland Security Investigations' (HSI) expansive statutory and civil enforcement authorities to combat the growth and proliferation of transnational criminal street gangs, prison gangs and outlaw motorcycle gangs throughout the United States. With assistance from state, local, tribal and foreign law enforcement partners, the initiative helps HSI locate, investigate, prosecute, and where applicable, immediately remove gang members from our neighborhoods and ultimately from the United States.
Mission
HSI's NGU leverages its anti-gang initiative called Operation Community Shield to enhance U.S. public safety. The unit develops strategic domestic and foreign law enforcement partnerships and utilizes those partnerships, along with all of its unique legal authorities to target gangs, to suppress violence and prosecute criminal enterprises.
Gang Intelligence Gathering and Sharing
HSI is the investigative arm of the Department of Homeland Security, and has positioned itself as the leader in transnational criminal gang investigations. As such, HSI is committed to sharing gang intelligence gathered through investigations to aggressively pursue leads.