Dallas shootings suspect 'changed' after US military service, says family

Military service changed suspected Dallas gunman Micah Johnson from an extrovert into a hermit, his parents have said.

Johnson's mother, Delphine Johnson, said in an interview that her son had wanted to be a police officer as a child, and that his six years in the Army Reserve, including a tour in Afghanistan, were "not what Micah thought it would be ... what he thought the military represented, it just didn't live up to his expectations".