LAS VEGAS — This summer’s USA team does not yet have a nickname or a real identity, so I decided after talking to several staff members I would call them “The Unknowns.” Team USA history is replete with nicknamed versions, from the Dream Team to the Redeem Team to the Nightmare Team to the B-Deem Team that won the Worlds four years ago. Why “The Unknowns” for this group? There is a fear of the unknown for the staff in trying to