One of the three teams representing the United States in last month 's NEC Bridge Festival in Yokohama , Japan , consisted of Gary Cohler of Miami ; Jim Mahaffey of Winter Park , Fla. ; Mark Lair of Canyon , Tex . ; Barnet Shenkin of Boca Raton , Fla. ; Jacek Pszczola of Las Vegas ; and Michal Kwiecien from Poland .