[Johnny_Cipher]

I'm also puzzled as to how to prevent this sort of thing. Short of mandating a complete gynecological/rectal exam for every passenger, wouldn't those new X-ray-type scanners detect this kind of foreign substance inside a person's body?

[GWfan]

Diagnostic x-rays would be able to detect plastics explosives in the vagina, but they are impractical.

If dogs can be trained to detect drug smugglers, I am sure they can do the same with explosives.

[snopercod]

I'm also puzzled as to how to prevent this sort of thing.

Learn to fly. Then you can go where you want, when you want, weather (and the TSA) permitting.

[TruthNtegrity]

Ultrasound.