That's interesting. I don't know of anyone that's left for NK. At the end of the day, the F9 contract is ALMOST a carbon copy of the NK contract. NK gets some things F9 doesn't, like 321 override, and F9 gets some things NK doesn't. I'd love to speak to that individual and ask them why. The 2 airlines are way more similar than different. I can't imagine leaving one for the other and taking any seniority hit.....but everyone's individual situation and priorities are different.