The 69-year-old is charged with making explosives in his home in Fairfield. On Wednesday, an apologetic Callahan said it is all a misunderstanding.
Federal, State and Local Police spent three days removing chemicals, explosive devices and over a hundred guns from the home. Callahan is a chemist by trade, a gun collector and an amateur rocketeer.
Authorities say there were 250 gallons of jet fuel on the property. On top of that, his lawyer says Callahan is a bit of a hoarder.
In the arrest warrant, Fairfield police say Callahan told them he was making a bomb for Keith Richards of the Rolling Stones. His lawyer says years ago, he learned through a friend who had met the musician that Richards had an interest in pyrotechnics.