It was nearly four years ago that Colgan Air flight 3407 from New Jersey crashed on its way to Buffalo, N.Y. All 49 passengers and crew were killed. Accident investigators blamed pilot error, and calls mounted for stricter oversight of regional airlines. As a result, new regulations for pilots are set to take effect beginning next summer. No one is against enhancing air travel safety, but some aviation experts are concerned the rules are too strict and could contribute to a severe pilot shortage. Pilots unions argue the situation is not that dire. Diane and her guests discuss new rules for pilots and the implications for airlines and travelers.