WASHINGTON - May 2002: President Bush attends a memorial for police officers killed in the line of duty. Under his jacket, he's wearing a Second Chance bulletproof vest, according to a company insider critical of the vest. A year later, a California police officer wearing the same model vest is killed when a bullet penetrates his vest. Sources involved in the case say the Justice Department now is conducting a criminal investigation into whether the company — Second Chance Body Armor — knowingly sold defective vests to the Secret Service, military and police. The company denies the allegation. "It means...