((a)) ** .—** Any person subject to this chapter who is drunk on duty shall be punished as a court-martial may direct.
((b)) ** .—** Any person subject to this chapter who, as a result of indulgence in any alcoholic beverage or any drug, is incapacitated for the proper performance of duty shall be punished as a court-martial may direct.
((c)) ** .—** Any person subject to this chapter who is a prisoner and, while in such status, is drunk shall be punished as a court-martial may direct.