air traffic controllers

US aviation authorities briefly halted flights at several busy East Coast airports after a cut fiber-optic line disrupted communications, according to reporting shared on Hacker News. The post, the top item on the site with 239 points, links to Reuters coverage of the FAA stopping some flights due to communication issues. Commenters are likely discussing air-traffic control infrastructure, single points of failure in critical networks, and resilience of aging FAA systems, though specifics of the discussion are not shown in the evidence.