Buttigieg and US officials warn of potential flight delays due to 5G expansion.

Transportation Secretary Pete Buttigieg warned airlines that flights could be disrupted due to interference from 5G signals if planes are not retrofitted with updated equipment. Only planes with the right equipment will be allowed to land during poor visibility. Some airlines are having trouble getting equipment due to supply-chain problems. The Federal Communications Commission says there is no risk of interference, while the Federal Aviation Administration has taken the airlines' side. Buttigieg threatened to sanction airlines for deceptive trade practices if they schedule more flights than they can operate with retrofitted planes.