The U.S. Secret Service dismantled a massive telecommunications network hidden throughout the New York City area, forcing investigators to confront a startling reality surrounding threats to national security. "I think that it’s a wake-up call," former NYPD inspector Paul Mauro told Fox News Digital. PENNSYLVANIA OFFICIALS REPORT INTERMITTENT FAILURES IN STATEWIDE 911 SERVICEThe network was discovered as the Secret Service was investigating several telecommunications threats targeting senior government officials, according to authorities. As investigators work to determine the source of the sprawling network, Mauro warned the sheer volume of the plot suggests that America’s foreign adversaries are advancing in their threats against the country’s citizens. CLICK HERE TO GET THE FOX NEWS APP"I've never seen anything like this, certainly not at this scale," Mauro told Fox News Digital.