(a) Nothing contained in this chapter shall apply to the U.S. Armed Forces, the duly authorized militia of the State, the fire or police departments of this State, or to the State or any subdivision thereof.

(b) Nothing contained in this chapter shall apply to destructive devices or explosives while being transported upon vessels, motor vehicles, or railroad cars in conformity with the regulations adopted by the Interstate Commerce Commission.

(c) The provisions of section 1604 of this title do not apply to a person who holds a valid license issued under Title 18 of the United States Code, chapter 44, to manufacture, possess, use, store, or transport a destructive device provided he or she is complying with the terms of the license. (Added 1971, No. 107, § 9, eff. 30 days from April 22, 1971.)