"About 25 years ago, a friend and collegue of mine co-authored a paper which asked ( among other things )
"Why should terrorists bother with building bombs, when there are so many nice, fuel-laden aircraft sitting around on tarmacs?"
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Remarkable. Thanks for sharing.
But it seems they deemed it "not likely". Even after they found out about the Boinka ( I never remember how to spell it) project, they dismissed that too.
Unfortunately, they underestimated the enemy and their resolve of being willing to kill themselves in the process of murdering us.
Operation Bojinka.