With all due respect Chris, isn't that the whole point? We never know when we will need to be equipped for surviving for hours, days, or weeks, do we? The idea of mailing the PSK ahead is good and I have considered that, but mailing out of the USA has some built-in risks and there has to be a place to mail it to where it will be safe until picked up. I feel like what you are saying about the butter knife is probably right. It would serve to arouse suspicion if nothing else. The book idea is a good one - I love that WWII gun camera footage! I don' t know if there is a good answer for an airline-approved PSK, but it is an interesting idea to me. Thanks for your time.