Nothing in this chapter shall apply:

1. (1) To the shipping, sale, possession and use of fireworks for public displays, and such items of fireworks which are to be used for public display only and which are otherwise prohibited for sale and use within the State shall include display shells designed to be fired from mortars and display set pieces of fireworks classified by the regulations of the Interstate Commerce Commission as "Class B Special Fireworks," and shall not include such items of commercial fireworks as cherry bombs, tubular salutes, repeating bombs, aerial bombs and torpedoes;
2. (2) To the manufacture, storage, sale or use of signals necessary for the safe operation of railroads or other public or private transportation;
3. (3) To illuminating devices for photographic use;
4. (4) To the military or naval forces of the State or United States;
5. (5) To peace officers; and
6. (6) To the sale or use of blank cartridges for ceremonial, theatrical or athletic events.