The Jim Creek VLF station, about an hour north of Seattle, briefly mentioned in the article, is still in operation.
I would have to assume that this building is pre-targeted by many megatons of advanced weapon systems.
https://maps.app.goo.gl/w9Sr4YkFbtfKf2Fh6
https://www.navy-radio.com/commsta/jimcreek.htm
https://www.cascadepbs.org/culture/2022/07/jim-creek-harbors...