NK had a total of 5 captains leave for other airlines last year. That barely registers. ULCC’s (NK/F9) won’t have a problem hiring if the growth continues as projected and upgrade times stay at 3 years or less. I think you’ll see some churn on the bottom of the list as guys that are 2 or less years in leave for one of the big 3 or fedex/ups but that’s about it. Currently even FO attrition is incredibly low (less than 20 total in 2019) but you may see that increase as the upgrade times at the legacies drop.