<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by *HighFlyah*:
What if some customer from say, FRA to IAD to MIA has an explosive device timed to go off just as it's loaded onto the IAD-MIA flight, and he or she doesn't board the IAD-MIA flight after arriving at IAD...
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This is exactly what happened in the case of AI 182 in 1985. This was made even more tragic by the fact that AI *did* have 100% PPBM in place, but the security contractor did not administer the program correctly.