A chief was convicted for using illegal drugs last month and busted down to E-5, according to legal records.

Chief Aviation Machinist’s Mate Mark W. Dean pleaded guilty at a special court-martial trial to using marijuana and cocaine on May 11, 2018 and his grade reduction was the only penalty he received, records indicate.

Stationed at Naval Operational Support Center Albuquerque in New Mexico, Dean did not respond to requests for comment.

Dean’s military attorney also did not respond to a request for comment sent through Navy spokesman Kevin Dixon.

The former chief initially faced charges relating to misuse of his government travel card, but those charges were dismissed as part of a pretrial agreement, records show.

Military prosecutors initially alleged that Dean used his card for unauthorized purchases from February to April of last year, racking up a debt of more than $1,900 that he failed to pay it off, according to charge sheets.

His service records show that Dean was originally from Texas and enlisted in 2002. He arrived at the New Mexico command in early 2018.