The swearing in ceremony by Governor Robert Bentley for a new head of Alabama's troubled prison system took place today. Retired Colonel Jefferson S. Dunn took the oath Wednesday morning as the new commissioner of the Alabama Department of Corrections. During his 28-year military career with the U.S. Air Force, Dunn served at the U.S. European Command Headquarters and the office of the secretary of defense. He retired from the U.S. Air Force in March. Bentley announced Dunn's appointment in January after outgoing commissioner Kim Thomas announced he would retire. Dunn takes the helm of a prison system that has come under fire over accusations of crowding and abuse. The prison system holds twice the number of inmates it was originally intended to house and is facing a federal lawsuit over inmate medical care.