U.S. Transportation Secretary Duffy said the first $12.5 bln tranche of congressional funding is being deployed to modernize U.S. air-traffic control. About 70% of communications links have been upgraded to high-speed fiber; 25 control towers have replaced 1970s-era paper flight progress strips with electronic systems; 143 towers have new ground-surface surveillance technology; and 469 radio sites have been modernized. Work is being accelerated under safety constraints and remains ongoing.

据AXIOS：根据FlightAware数据，截至美国东部时间周六上午5时15分，美国境内、进出美国及国内航班当天已有近3300架次取消，另有近1000架次延误。

U.S. media on the 13th reported the Pan American Health Organization has decided not to recognize the U.S. as measles-free, citing people familiar with the matter in the Wall Street Journal and CNN. PAHO is the World Health Organization’s regional body. WHO requires at least 12 consecutive months without local transmission of the same measles strain to confer measles-free status. The U.S. declared measles eliminated in 2000; since 2025 U.S. measles cases have exceeded the cumulative total recorded from 2000–2024.