Airlive is reporting that at least three aircraft were damaged when a malfunctioning foam fire suppression system filled a hangar in Texas. According to the time stamp on the surveillance video, the mishap happened on Oct. 28 at McKinney National Airport likely just before noon. It's not clear what triggered the foam, but it's most commonly referred to as an equipment problem and not human error.
This is a companion discussion topic for the original entry at https://www.avweb.com/aviation-news/faulty-foam-system-fills-hangar