Exactly how dumb of an idea is it to catch the Metrorail Orange from Vienna/Fairfax to Farragut West, then walk from there to the Smithsonian Metro for the ride back to Fairfax on a weekday evening?
Say leave Fairfax around 7pm and return around 10pm.
Any issues having my P'kal on the Metro or on my walking route?
What about a concealed 4" fixed blade?