Southwest is being investigated after a slew of incidents, including a rare 'Dutch Roll' and planes flying too close to the ground

• The FAA is investigating Southwest Airlines after several in-flight incidents in recent months.
• Southwest planes have descended to dangerously low altitudes, and one suffered a so-called "Dutch roll."
• The airline said it was working with the FAA and that its safety procedures were "exceptional."

Southwest Airlines has recently had a few too many close calls when it comes to safety.