§ 302. Definitions. Except as otherwise provided in this article, terms used in this article shall have the meaning given to such terms in articles one to eight, inclusive, of this chapter and in the state defense emergency act.

"Civil defense volunteers" shall include those members of the civil defense forces under the provisions of the state defense emergency act who are volunteer persons serving without compensation in the personnel of volunteer agencies.

"Authorized civil defense service" for the purposes of this article includes duties and services performed by an air raid warden during attack, actual or imminent, and subsequent to attack, but not during training or practice periods; and duties and services performed by a civil defense volunteer other than an air raid warden following actual attack, but not during training or practice periods or during attack, actual or imminent. For the purposes of this article, such services shall be those authorized by the local director of civil defense in accordance with regulations and orders of the commission or state director of civil defense.

"Injury" within the meaning of this article means only accidental injury arising in the course of authorized civil defense service during attack, actual or imminent, or subsequent to attack, and disease or infection that may be sustained or death incurred either as the natural and unavoidable result thereof or of exposure to radiation or to noxious gases or to germ warfare in the course of such authorized service.

"Commission" shall mean the state civil defense commission created by article three of the state defense emergency act, and "state director" shall mean the New York state director of civil defense appointed under the provisions of said act.

"Board" shall mean the workmen's compensation board.

"Chairman" shall mean the chairman of the workmen's compensation board.