Cool. No girly gun for Senator KB. My wife, who is no shrinking violet on the subject of handguns or much of anything else, doesn't like to fire my S&W .357. Too much "bang" and too much buck for her taste.
The DC gun ban is truly outrageous. Technically, I break the law every time I bring some guns from home (MD) to my office (DC) so that I can go to the range after work. They stay locked in my trunk in the parking garage in the basement of our building during the day, so I am not too worried about them being stolen, but I do worry about being in an accident or otherwise getting stopped while I have them in the car. The DC authorities would like nothing better than to prosecute an out of state type for violating "their" little gun ban.
You need to look into the details of the "Safe Passage" provision of the McLure-Volkmer Forearms Owners Protection Act of 1986.
If it covers your situation, you need to carry a copy of it, as the cops do not actually know the laws they "enforce".