Originally Posted by
exerda
Yes, although if we've got terrorists carrying dirty bomb materials aboard planes, we've got more to worry about than the water carnival, too.
No kidding.
(And at that point, a dirty bomb on the ground becomes a national security threat as well; set one off in lower Manhattan or on the National Mall and you've achieved the same goals, largely--and perhaps more effectively so--than setting it off in the air.)
Absolutely. Whereas a normal bomb going off may or may not be a national security issue, depending upon location for the most part.