and that's very important. >> true. and even though i might be a little more intimate with the systems on the airplane, this is not an intimate part of my knowledge. >> as a pilot -- >> this is not a place that i view. a friend of mine after being on the airplane for four years and now retired said he's never been down there. >> is that right? >> because there's no real need for us to be down there. there's one circumstance that i would go down there and that's simply after an incident there's a diagram on where to pull a particular circuit breaker like what's being pointed out here. >> if there was a fire on board or smoke, is that part of the procedure to turn circuit breakers off? turn off the in flight system, to turn off the acars? >> it wouldn't be to go down those steps to do it. it would be something that's done in the cockpit. we have circuit breakers in the overhead panel that might help perform that. most of that are switches as opposed to circuit breakers. that would be a troubleshooting