Federal prosecutors filed corruption charges yesterday against a onetime defense contractor who has ties to both U.S. Rep. John Murtha and a suburban Johnstown defense contractor currently under criminal investigation. Richard S. Ianieri, former president and CEO of Coherent Systems International Corp., was accused of accepting $200,000 in kickbacks. He is charged through a criminal information and is expected to plead guilty. No date has yet been set. According to the court filing entered yesterday, Mr. Ianieri is accused of taking the kickbacks from a date unknown through January 2006 while an officer for Coherent, which was a prime contractor...