TFL is north of Alameda on Potomac.

From 225, one half block (i.e. first stoplight over the highway) West of 225, turn right (North) on Potomac. Go north about 1/4 of a mile and it'll be on the right side of the road, between Potomac and the highway.

Google Maps link which is slightly inaccurate. It's the gray roof building just south of the sideways L shaped building. If you're coming down 225-S from the North they have signs that face towards the highway. (If you're coming from the North, I suppose you could get off on 6th and continue south on Potomac, but making a left turn into their parking lot may prove annoying).

Hmmm... I have tomorrow night off, I just might show up.

Their range rules include that your bullets have to be jacketed, so if you're bringing your own, make sure it's FMJ.