SAVANNAH — Two police officers won't face criminal charges for fatally shooting a southeast Georgia man inside his home after the man's fiancée called 911 seeking an ambulance to help him, the prosecutor reviewing the case said Wednesday.Waycross Judicial Circuit District Attorney Bradley Collins said personal audio recorders carried by the officers confirmed that they warned 45-year-old Jack Lamar Roberson to drop a knife several times before they shot him Oct. 4. The slain man's mother, who was in the house at the time, had denied Roberson was armed and insisted police shot him without warning."It's an unfortunate incident," Collins said in a phone interview. "But the recording doesn't take sides.