..... Michael Gann, 55, of Inwood, allegedly built at least seven improvised explosive devices (IEDs) using chemicals purchased online, according to US Attorney for the Southern District of New York Jay Clayton. "As alleged, Michael Gann built explosive devices, stored them on a rooftop in SoHo, and threw one onto the subway tracks—putting countless lives at risk," Clayton said. "Thanks to swift work by our law enforcement partners, no one was harmed. That vigilance assuredly prevented a tragedy in New York." Authorities say Gann threw one device onto the subway tracks on the Williamsburg Bridge and stashed others, some containing...