Didn't they lift that semi recently ? I did a 10 page research paper in my college criminology on how more legal fire arms always reduces crime and remember some DC gun owning ban being lift sometime between 2005 and 2010..... I got an A on it By the wayFort Bayard is in DC.
I'd recommend avoiding hosting a war in the District itself; DC cops can be really anal when it comes to Nerf with the handgun ban and everything.
But for parking and public transportation. and stuff, I agree and think straying away from the actual District of Columbia is benefitial to the war.