I think they're all coming to Northern Virginia.
I grew up in Northern Ohio, and I am convinced that the whole industrial Midwest will continue to decline in population. This is due to three factors:
1. Low cost manufactured imports from China & elsewhere.
2. Too friggin cold.
3. Unions are still too strong to make it affordable to do business there, compared to the non-union sunbelt.
Not all of them. You can't go on highway 19 in Florida without running into a couple of hundred of them. Everytime I go down there it seems like I hear one them say "Well in Detroit we did it this way." Who gives a rip!! Obviously they didn't like Detroit all that much.