No idea how they were chosen; but judging from the medals on their uniforms, I would guess they are some of the best examples of our enlisted military.
Drudge has a picture of wacko protesters. Note in the Picture they have a no left turn sign dead center in their midst. The officer saluting as the coffin passes with teh impotent protesters is also a nice touch in the picture.
I did not want to sully this thread with their images.