The Federal Aviation Administration (FAA) suddenly issued an order: all aircraft at airports across the United States are prohibited from taking off. Those in the air can land as usual, but all ground operations are suspended. This kind of operation hasn't been seen much since 9/11. It's suspected that there was a communication system malfunction. Controllers and pilots rely on radio communication to direct flights; if this phone line were to break, no one would dare to let planes take off, so a blanket ban was implemented. Could this be retaliation for freezing $1.2 billion in cryptocurrency stolen from Binance by a North Korean hacking group and shutting down a number of North Korean hackers' servers?