http://www.msnbc.msn.com/id/19604812/ Terrorist packing $15 bombs which can take down transatlantic airliners. 5,000 pounds of fuel oil and fertilizer if positioned correctly can kill 168 people. 1,200-pound bag of fertilizer cost $200. Have manufacturers really reduced the amount of ammonium nitrate? Peroxide based explosives can be made from simple drugstore items, triacetone triperoxide, HMTD (hexamethylene triperoxide diamine) TATP (Triacetone triperoxide), Acetone (found in nail polish remover), or hydrogen peroxide (chemical in hair bleaching products). Here is chemical engineer Hans J. Michels telling us how to do it..."concentrate the chemicals". TATP, is very very difficult to detect in air-ports, It looks like powdered sugar, and no were not protected from it. Here is the amazing part: Ehud Keinan, "carries a small sample of the volatile compound in his carry on luggage when he flies... just to test airport security. Nobody ever stops him." How Wonderful! TATP was first used by Palestinian fighters to bomb israel.