The U.S. Secret Service announced Tuesday that it discovered more than 300 co-located SIM servers and 100,000 SIM cards at five locations within 35 miles of New York City. Matt McCool, head of the Secret Service's New York Field Office, said the network was capable of bringing down cellular infrastructure. "We're working through every call, every text, every search made on those SIM cards," an official said on background. The Secret Service said the operation was launched earlier this year after "multiple telecommunications-related imminent threats directed towards senior U.S. government officials." "The potential for disruption to our country's telecommunications posed by this network of devices cannot be overstated," Secret Service Director Sean Curran said.