A Cal Expo police officer was arrested by the FBI Friday on charges of falsely claiming he earned a Silver Star for gallantry in combat 18 years ago during Operation Desert Storm and then lying to FBI agents when confronted eight weeks ago. Eric Gene Piotrowski, who is charged under the so-called Stolen Valor Act, made an initial appearance Friday before U.S. Magistrate Judge Dale A. Drozd, who ordered him released on a $10,000 unsecured bond. Piotrowski, 41, bought the medal and certificate via the Internet in 2007, and created a citation on a personal computer, according to a sworn...