At 11:21 -0500 6/8/05, bv wrote: For all of our critical space-flight hardware (power supplies, plasma instruments, etc.), we put them in well-padded containers and carry them onboard. We draft letters to airport security (and carry duplicates thereof) quoting the NASA contract number and giving contact phone numbers at the SwRI office. In many cases, neither X-rays nor opening the contamination bag is a good idea. With the appropriate groundwork, we have not had any problems (knock on wood) so far. So it is *possible* to carry electronics on planes, under some circumstances. The clever instrument teams make sure their containers don't fit in coach seats, so they have no choice but to go First Class. :-) -- - Mark 210-522-6025, temporary cell 240-375-2995