The explosives stolen from a West Side storage area were powerful enough to have blown shrapnel more than a half-mile along the highways the thieves drove after stealing the material, a federal agent testified Wednesday. None of the suspects apparently had any training in dealing with explosives, said agent Gary Ainsworth of the BATF. When recovered, he said, the explosives and detonators were packed together— a distinctly bad idea with things that go bang. An air unit helped locate the metal shed where the stolen magazines— steel boxes with wooden interiors made specifically for explosives— were being stored. According to...