You may recall that MacBook Air user Michael Nygard was recently screened by the TSA (that's the Transportation Security Administration, to those who aren't in the US.) when he went through security with his MacBook Air. It would seem that the good folks manning the X-ray machine couldn't make heads or tail of what they saw on their screen. When Nygard explained that the MacBook Air was, in fact, a computer (and had that assertion backed up by a younger TSA worker) all was cleared up and he was sent on his merry way (though he did miss his flight).
The TSA is working hard to make sure you don't have to deal with this hassle. On the official TSA blog (yes, the TSA has a blog and it is pretty entertaining) Bob informs us now that he is working with Apple to get his hands on a MacBook Air (hey, Bob, just make sure you don't throw it out) for some testing. He wants to run it through one of their screening machines and see if it looks any different than normal laptops. If it does, in fact, look a little odd the image will be sent to all TSA workers in airports so that future travelers won't be bothered.