Three members of a prominent San Antonio family, including a one-time member of Fiesta royalty, were sentenced in federal court Friday on charges that they engineered a multimillion-dollar scheme to rig Army contracts.  U.S. District Judge Fred Biery sentenced Kenneth "Ken" Flores — a former Rey Feo — to four years in prison, while his brother Christopher Flores received a two-year prison sentence, according to federal officials. Their mother, Irma Flores, got five years' probation.