New video of 'ISIS-inspired' suspect buying material to make homemade bomb

This is the moment Amir Belot allegedly walked into a Pennsylvania fireworks store and walked out with what he needed to set off a bomb. Days later, police say he was one of two ISIS inspired teenagers who drove to New York City and tried to ignite explosive devices in a crowd outside the official home of New York City's mayor. >> Once we heard improvised device, we're at least going to do a check.>> NBC News spoke with Phantom Fireworks. The company tells NBC News it searched for both suspects names once t ...