British intelligence service MI5 has discovered that Al Qaeda female suicide bombers are getting explosive charges inside their breasts, using a similar procedure to breast augmentation. This makes bombs almost impossible to detect at airports. But there's something strange here.
The explosive devices are made of pentaerythritol tetranitrate—also known as PETN—one of the most powerful explosives in existence. The surgeons performing the operations—reportedly trained in the United Kingdom—place the PETN devices inside bags, just like the ones used to hold the silicone gel inside breast implants. PETN is difficult to detonate, however, even while it's more sensitive to shock and friction than TNT. It has an explosive energy of 5.810 kilojoules per gram, which means that an explosive cup C—with just a few grams of PETN inside—would be able to open a large hole in an airplane's fuselage, effectively causing a crash.
Allegedly, MI5—who picked up the information from Middle East terrorist chatter following the failed crotchbomber attempt—has also pointed out that some men terrorist are getting PETN-based devices into their buttocks, using the same surgical procedure.