FAIRFAX, Va. (AP) - The teenager accused in a string of sniper killings last year said he wounded a 13-year-old boy in order to make the police chief hunting him "emotional," a prison guard testified. Joseph Stracke, a captain at the Supermax prison in Baltimore, testified at a pretrial hearing Thursday that Lee Boyd Malvo spoke proudly of the shootings allegedly committed by him and fellow suspect John Allen Muhammad. The conversation occurred Oct. 26, two days after Malvo's arrest. Stracke said he asked Malvo why he shot Iran Brown, 13, outside a Bowie, Md., middle school. "To make Chief...