off, but sometimes with this insidious decompression, the pilots, their judgment becomes affected by the lack of oxygen at the time the alarm goes off and they don't take action. >> so, one possibility, someone with necessafarious intent, you suggesting an accident could have happened on this plane -- >> yes. >> and it could have been a ghost flight for four hours before potentially crashing who knows where. >> that's one alternative. the other is a security issue in the cook pilot. >> what about the fact we're also learning -- let's play out the if it was hijacked. we know this plane had fuel for six hours? i was reading it could have gone as far as the indian ocean. >> it's true. >> it could have gone as far as the border with pakistan. so, when we talk about the search area, which doubled yesterday, should they be looking elsewhere? >> i think they're considering it seriously. now, they must have some primary