He lived in the same condominium in Crystal City, VA as my mother.

I actually just shared pleasantries with him in the elevator, but I recall he and someone who looked to be some sort of body guard both got very nervous when I started rummaging around in my backpack. I think he usually used the elevator override to avoid being in the elevator with other people, and forgot this one time, as he looked rather surprised when the elevator doors opened to pick me up.