HOLY FUCK
I "might" have found something with this whole Loop Capital/Denver Airport dig, but would need more digging. Sauce is not solid.
http://www.truthistreason.net/cia-moves-operations-from-virginia-to-denver
The entire hub of domestic CIA work is headed towards Denver, and more than likely, will be stationed underneath the expansive Denver International Airport.
From Langley, Virginia to Denver, Colorado. I’m pretty sure there are intracontinental military tunnels connecting the two locations, as well as the Denver International Airport to many other places.