Fairfax.
I'll also chime in for Mr. James, as he only accesses TFL from the office.
He's in Centerville.
I've put together a couple of inpromptu meets at the NRA Range over the last several months, and another VA person has put together a couple of trips to the Bull Run Shooting Center.
Any time you feel the urge to get a shoot going, though, simply give a shout.