When you take a plane, you need to go through those screening by TSA offices at USA airports. You take the laptop and put it in one of those dirty plastic tray and let it go through an Xray. Does it damage the laptop? I heard whatever that xray machine emits is not strong enough to damage the electronics compoents of the laptop. My PCs have gone through that screening several times already without hardware/software problems (knock on wood). But, I am very protective of my Macs and I would like to make sure my PBs are okay if I decide to take it with me when I use a plane next time.