One is dead downtown, just kitty corner from the HS softball field. The other is at the nexus of the Boeing Freeway and Evergreen Way. The latter is guarded by two fences, and appears to have only a single door.
I have no idea what a CO is. I can tell you that the TransPacific internet cable terminates somewhere off of Everett, WA. There’s a data center here in town.
Central Washington has a huge number of data centers. Access to copious water and cheap hydroelectric power drives that.