CHEYENNE, Wyo. (AP) — A man who sought unsuccessfully to save his military pension after being convicted of sex crimes against a child is appealing his 15-year prison sentence.

A federal jury in October convicted Army National Guard Lt. Timothy Wells of sexual exploitation of a child and other charges. Prosecutors say the crimes occurred at the F.E. Warren Air Force Base in Cheyenne.

Wells is asking a federal appeals court in Denver to review whether U.S. District Judge Alan B. Johnson of Cheyenne made errors during Wells' trial and whether the prison sentence Johnson imposed in January is reasonable.

Johnson had denied Wells' request to release him from custody temporarily and reschedule his sentencing for April to allow him to finish the 20 years of military service necessary to qualify for a pension.

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