I have a couple of questions that maybe you can shed some light on:

• The ding at 10,000 feet - is that automatic, or do you manually have to make that happen?
• What is the reason for not allowing any electronic devices, such as an iPod during T/O and Landing? My guess is to keep people paying attention (more-or-less)... and based on 1404 that would be a good idea, but is there another reason?
• The A320 has a "ditching" mechanism to close off external intakes. Do the Boeing aircraft have a similar mechanism?

Thanks for taking time to answer these and the other questions!