for more on the results let's bring in alaska air ceo brad tilden who joins us by phone the 737 max ase those in your fleet but had them on order. how closely are you watching the situation and what does it mean for those future orders? >> we're watching it super closely. we didn't have any maxs in our fleet at the time it was ground but we should have three delivered by now seven or eight coming next year. we're watching it very closely like everybody else. >> talk us through this quarter's numbers, brad. clearly this share price slipping a little bit despite a good quarter backwards looking are you giving out some guidance that might be a little bit soft? >> no. i'm not sure what you're seeing, but we actually felt really, really good about the quarter and felt good about our guidance going forward. our margin was 17.6%, almost 18%. we think that will lead the industry we're feeling good about our network and revenue production my own sense our guidance was fairly positive going forward. >> brad, to dig into the seat mile, more what's driving that and i guess based on that what's you