Air Force Chief of Staff Gen. Norton Schwartz has taken personal responsibility for failings at the Dover military mortuary amid revelations that some fallen troops' remains were cremated and disposed of at a Virginia landfill.

The Air Force acknowledged on Tuesday that it had lost or mishandled the body parts of some fallen troops. In response, Defense Secretary Leon Panetta ordered a 60-day review of the mortuary's procedures

At a Senate Armed Services Committee hearing on Thursday, Schwartz assured lawmakers that earlier troubles at the mortuary have since been remedied. The Air Force has taken disciplinary action against three supervisors at the mortuary, but none has been fired.

Read 'Air Force chief takes responsibility for errors' by the Associated Press.

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