When looking for a server a secure pipe was first on my list. I wanted it outside of Florida, Mac related with state of the art equipment and software. ASO fit the bill!
I think if any public place is secure being close to the CDC would be on top of that list.
There are others locations that I considered but they were inclined to interfere. I had a server in Manitou co. near Cheyenne mt. for a while and it was never right. A friend has one near Camp David that's always on the fritz. North of Virginia is too busy and susceptible to Ice as is any place north of the 32 parallel.
Head west you have tornados, left coast rolling blackouts an Enron. Atlanta, with it’s Moss and Magnolias seemed like a place a server would enjoy.