What article of ucmj covers threating a snco?

Article 91 could be addressed;

891. ART. 91. INSUBORDINATE CONDUCT TOWARD WARRANT OFFICER, NONCOMMISSIONED OFFICER, OR PETTY OFFICER

Any warrant officer or enlisted member who--

(1) strikes or assaults a warrant officer, noncommissioned officer, or petty officer, while that officer is in the execution of his office;

(2) willfully disobeys the lawful order of a warrant officer, noncommissioned officer, or petty officer; or

(3) treats with contempt or is disrespectful in language or deportment toward a warrant officer, noncommissioned officer, or petty officer while that officer is in the execution of his office;

shall be punished as a court-martial may direct.

OR.... Article 134, the "General Article"

934. ART. 134. GENERAL ARTICLE

Though not specifically mentioned in this chapter, all disorders and neglects to the prejudice of good order and discipline in the armed forces, all conduct of a nature to bring discredit upon the armed forces, and crimes and offenses not capital, of which persons subject to this chapter may be guilty, shall be taken cognizance of by a general, special or summary court-martial, according to the nature and degree of the offense, and shall be punished at the discretion of that court.