‘No Indication as of Yet’ That Nationwide Ground Stop Is Caused by Cyber Attack, Says Markwayne Mullin

Sen. Markwayne Mullin said there is “no indication as of yet” that a nationwide flight ground stop was caused by a cyberattack. The Federal Aviation Administration is investigating an air traffic control outage linked to the disruption. The ground stop affected flights across the United States, while officials work to determine what caused the system problem.