LONDON – Two-time Olympic champion fencer Mariel Zagunis was selected Wednesday by the U.S. Olympic Committee to carry the flag and lead the 529-member U.S. team into Friday's opening ceremony. Mariel Zagunis, a two-time gold medalist in fencing, won a vote of U.S. team members and will carry the flag on Friday in the London Games opening ceremony. Mariel Zagunis, a two-time gold medalist in fencing, won a vote of U.S. team members and will carry the flag on Friday in the London Games opening ceremony. The U.S. Olympic Committee says Zagunis won a vote of team members ahead of Friday's ceremony.