The FBI is already in their second building, I remember going to the FBI when it was in its first building and taking the tour.
And I remember my neighbor who was a cement finisher worked on 495, the Kennedy Center, the FBI building, and the Metro System in DC. He was a union man, and that was his entire career right there. Hard-working son of a gun.
The FBI has significant training facility down there on the Quantico Marine base. I’m sure they would be leasing the property or an MOU.
Lots of good suggestions but I like the border cities idea for all upper management positions.