Three-time Formula One world champion Ayrton Senna of Brazil poses for photographers during the presentation of the Williams team for the 1994 season at Estoril circuit on January 19 1994. On Thursday, nearly three years after Senna died in a crash during the San Marino Grand Prix, Frank Wiliams, head of the Williams team, and five other top Formula One figures will face manslaughter charges in a trial that could threaten the future of the sport. (AP Photo/Armando Franca)
