On the day that almost two dozen U.S. embassies and consulates across North Africa and the Middle East are closed following the identification of a significant threat from an al-Qaeda affiliate, a senior U.S. official is providing new details about the communications intercepted from the terrorists, telling ABC News that al-Qaeda operatives could be heard talking about an upcoming attack, Info Wars reports. Sen. Saxby Chambliss, the top Republican on the Senate Intelligence Committee, called it the “most serious threat I’ve seen in a number of years,” adding it’s “very reminiscent of what we saw pre-9/11,” according to the Washington Times. Sources told Fox News the chatter picked up by U.S. intelligence agents over the past two weeks exceeds anything in the last decade.