Joe,
I actually teach martial arts at a studio just outside Ft. Meade. If you want to contact me about getting something set up you are more than welcomed to (email is in my profile, phone is four 4 three - 8 eight 3 - one 1 two 9). That way you can get an interview, and then perhaps go to a local training session or jam to get your photos. We've actually had quit a few of your colleagues come and do reports on my master for their project as he is retired military.
In regards to proximity to Ft. Meade, you basically have a group 20 minutes away in Glen Burnie, and a group 20 minutes away in Arnold at the Anne Arundel Community College (as Dud pointed out). I would recommend checking out the people who train at the community college, just because I am more familiar with them.
There is going to be a jam there tomorrow, which should be a good event because a group of traceurs from DC are coming up to check the college out.
Good luck on your project.