My laptop was accidentally swapped by another businessperson at GRR last week (he left his Thinkpad and took my Dell by accident while I was being wanded). Fortunately I figured it out and they paged him to come back. But if it had been deliberate theft.... that could have been a problem. The National Guard guys didn't show a bit of interest in the situation; maybe they thought this was a planned hoax so that somebody else could sneak something through!