Three passengers who were onboard the Alaska Airlines flight that diverted to Portland after an off-duty pilot allegedly tried to shut down the plane's engines have filed a lawsuit against the airline. The lawsuit claims the airline failed in its duty of care by allowing the pilot, Joseph David Emerson, into the cockpit when he was reportedly suffering from depression and lack of sleep. The plaintiffs allege they suffered emotional distress and psychological injuries like anxiety and fear of flying due to the incident. The lawsuit seeks class-action status on behalf of all passengers onboard, arguing the airline should have better screening processes to ensure pilots allowed in the cockpit are fit to fly.