(1) Sections 200h to 200j do not apply to any of the following:

    (a) A member of the military forces of the United States or of this state acting under a lawful order or while engaged in a lawful military activity.

    (b) A law enforcement officer enforcing the laws of the United States or of this state or while engaged in a lawful law enforcement activity.

    (c) A person engaged in self-defense or the lawful defense of another person.

    (d) Unless acting with an unlawful purpose, a person acting within the scope of his or her employment under a rule or a permit or license of the United States or of this state.

    (2) Unless acting with an unlawful purpose, a person who within the scope of his or her employment violates a rule or a provision of a permit or license issued by the United States or this state to manufacture, deliver, possess, transport, place, classify, label, use, or release a substance or device shall not be prosecuted under this chapter.

    (3) This chapter does not prohibit the possession and use of a device that uses electro-muscular disruption technology as permitted under section 224a.