Former Gov. Mitt Romney showed the right stuff by keeping cool when an unruly airline passenger threatened the likely GOP presidential contender in a flap over reclining seats, experts said. “There’s no need to get into fisticuffs over a reclined seat,” said etiquette guru Jodi R.R. Smith, president of Mannersmith. Smith called Romney “generally one of the more well-mannered politicians on our national stage.” The former Bay State governor and his wife, Ann, were on a flight from Vancouver to Los Angeles Monday when Romney asked the man sitting in front of his wife to put his seat upright for...