According to CoinMeta, and as reported by Bloomberg, the Federal Bureau of Investigation (FBI) believes that the communication issues affecting air traffic control in the United States are not caused by cyberattacks or criminal activities. One direction of the current investigation is whether the malfunction was triggered by a software update. Earlier on the same day, U.S. Transportation Secretary Shawn Duffy stated that since all air traffic control centers were affected by the communication problems, the Federal Aviation Administration (FAA) has issued orders to suspend flight departures from all U.S. airports, and technicians are investigating the issue.