Two Sonoma County deputies on patrol saw the boy walking with what appeared to be a high-powered weapon Tuesday afternoon in Santa Rosa, sheriff's Lt. Dennis O'Leary said. The replica gun resembled an AK-47 with a black magazine cartridge and brown butt, according to a photograph released by the sheriff's office. Deputies would only learn after the shooting that it wasn't an actual firearm, according to O'Leary. After spotting the boy, the deputies called for backup and repeatedly ordered him to drop the gun, O'Leary said in a news release. It wasn't clear whether he pointed the replica assault rifle...