occurred. and they're grounding, it's not really a grounding, it's an inspect before for the flight. almost a grounding. but it's a very prudent safe thing to do. >> i think what's more problematic here, jeff, the 7:30 series has been somewhat problematic in the past. it was the plane that crashed from that lion air flight along with another crash as well. they were subsequently grounded then. and inspected. i believe it was an issue, at that time, with the flying capacity of it. that the pilots flying capacity with the planes. if you think about that, coupled with what is happening now, what do you make of it? >> well, i don't think the two events are similar. quite frankly. yeah, they're both 737 max is. but the two that crashed in indonesia and ethiopia were max eighths. this is a max nine.