The Federal Aviation Administration has issued a nationwide ground stop for all flights in the United States until further notice, "due to extraordinary circumstances and for reasons of safety."

U.S. Transportation Secretary Sean Duffy wrote in a Friday post on X, "The @FAAnews issued a nationwide ground stop for all U.S. airports following a communication issue impacting all Air Route Traffic Control Centers. FAA technicians are investigating the issue. We will provide immediate updates as we have them."

A Yahoo reporter who is currently on a plane on the tarmac waiting to depart on a United Airlines flight from Los Angeles International Airport says her pilot said, "In a nationwide ground stop, FAA just released an advisory, and we are told that at this time t...