All UPS Flights Grounded After ISIS Threatens Next 9/11 Style Terrorist Attack On the anniversary of September 11, and Benghazi, there were rumors of a follow-up attack. In fact, UPS flights were grounded, which has many Americans believing that the government was on high alert, in a potential effort to thwart yet another terrorist attack. According to the Air Traffic Control System Command Center (ATCSCC), UPS pilots were told to stop all UPS flights regardless of destination. UPS later released a system claiming that they were experiencing computer difficulties. And while the actual facts surrounding the incident are blurry, Americans who believe this was in response to a terrorist plot remain strong. What do you think? Was this a response from the government to a terrorist plot, or just a coincidental computer failure? 