go forward. >> in that moment when you're having a problem with one engine, is it difficult to figure out which engine it is? >> it can be and that's when you have to really rely on the instruments. you really have to look at what is going on. there have been situations -- for example, one of the crashes that i mentioned, the prior dozen or so crashes, the passengers and the flight attendants were trying to tell the pilot that they had the wrong engine, that the wrong one was shut down. so it comes down to training. and in those emergency situations if you haven't been trained for it and trained in a hands-on situation, it's hard to get this in simulator, that's the key. the key is training and being able to react. if you don't know what to do, disaster is likely to ensue. >> while we have you i want to ask you a question, about 30 seconds left to talk about something facing all travelers now.