Urban Myth?: Smoke Detectors, Antiques, and Surplus Lanterns = Radioactive Device

http://www.damninteresting.com/?p=340

So a boyscott uses a smoke detectors, antiques, and surplus lanterns to make a radioactive device? He uses americium-241 from the smoke detector, and after some other simple house hold items, he ends up with neutron gun and some scared people at the EPA and the NRC.