This chapter does not prohibit the assembling, compounding, use and display of special effects of whatever nature by a pyrotechnic operator licensed by the State of Washington engaged in the production of motion pictures, radio or television productions, theatricals or operas when such use and display is a necessary part of the production and such pyrotechnic operator possesses a valid public display of fireworks permit issued by the City. (Ord. 21-19 § 2 (Exh. A))