An Air Force sergeant faces 25 years in military prison after he pleaded guilty to charges that he sexually molested girls in Germany and the United States.

Officials at F.E. Warren Air Force Base in Cheyenne announced Thursday that Tech. Sgt. Michael L. Merritt was sentenced earlier this week. He pleaded guilty to military charges including sexual assault and kidnapping involving four girls from 2003 through 2013.

Merritt transferred to F.E. Warren last summer and was arrested in October. Authorities say he committed most of the offenses against military dependent children at Ramstein Air Base in Germany.

Capt. Eydie Sakura is Air Force spokeswoman at F.E. Warren. She says Merritt was a facility manager before his arrest and didn't have direct contact with nuclear missiles at the base.