My $0.02.....
i think it looks kind of silly.
Honestly, I'd wondered why too, but I was just ::shrugs:: somewhat ok with not knowing...it just wasn't one of those things that i was too concerned with knowing........ :-)
I always figured it was just our twist on the navy salute thing (that way it wasn't considered mocking them or anything) but i think it just looks kind of forced and uncomfortable.....
now I know, eh?
~*~Mandie~*~