Thanks guys, I knew yall would be helpful.
M58, I get what you're saying about carry ons/annoying people. I'll keep it in mind, but I'm packing pretty light and small for this trip and would prefer to keep my stuff with me this time. Besides, I didn't pay for my ticket; yall did.

Even if I could get a knife up there, I'm still not sure what kind of security I'm going to have to deal with once there. I also have a feeling most of the folks in the group will not be pro-armed. I'm afraid I'm going to have to be lead around like the rest of the sheep for 2 days. My goal is to at least be the "black sheep" of the group.
Flying operationally engrained two things. ALWAYS have a light ON YOU, and know where the exits, structure, and be able to get there.
I usually put a light in my carry on while going through security then put it in my pocket while airborne. As much as I'd like to also have a multi-tool too, that isn't happening now.
As far as in DC, it depends on where your headed. Are you staying in DC proper or headed soemwhere else? Which airport are you going into? The area around Dulles isn'd bad, I'm up there all the time for work. National has a few decent places close in but pretty much sucks after about 6PM. Traffic BLOWS. The Beltway can be a bit confusing but look on the bright side, if you miss your exit it will come back around eventually.
That's a good idea; I'll stick it in my pocket after I get through security.
I'll probably fly into Reagan, maybe Dulles. If mapquest is right, I'll be staying about 1000 meters, straight line, from the White house. I won't be doing any driving.