It's just a matter of time before an airplane gets blown out of the sky by a suicide bomber. As an air marshal, that's what I suspected the most.
The below link shows how that would be easily possible. Drug smugglers--"mules"--have hidden contraband in body cavities for decades. Now, the suicide bomber has something to mimic. One al Qaeda member sneaked past air port security overseas with ease prior to detonation.
Mark my words: An airplane will get blown out of the sky.