Video: Gunman Stood Over and 'Executed' L.A. County Sheriff's Sergeant, Sheriff Says

VIDEO: Gunman Stood Over and 'Executed' L.A. County Sheriff's Sergeant, Sheriff SaysA gunman who killed a Los Angeles County sheriff's sergeant in Lancaster, CA, on Wednesday first wounded him, then stood over him and fired four additional rounds into the lawman's body, Sheriff Jim McDonnell said Thursday. "This was a calculated execution," the sheriff said.The gunman was carrying a stolen weapon and after the shooting unsuccessfully searched Sgt. Steve Owen's body for his handgun "with the inte