The 357th exist and it has a logo !!!
One more costume added to the gallery section: Spartan Armor from Halo 3
This one made its first sortie with the rest of the 357th (imaginary company that spawned from the group project that created the armor) at ComicCon Montreal this past weekend. It's always fun to be part of a group while you're in costume and we surely made most of it.
Enjoy the pictures I've added to the costume page.
Thanks for looking