White House construction cited as factor in Marine One safety incident, NTSB finds

In the skies above one of the world's most protected addresses, a routine act of construction became an invisible hazard. The National Transportation Safety Board has determined that building work at the White House disrupted the radio communications that keep aircraft safely apart, allowing Marine One to draw dangerously close to another aircraft. The finding is less an accusation than a reminder that even the most guarded environments carry blind spots — and that the electromagnetic fabric of modern safety systems is more fragile than it appears.