Air Force may have lost another assistant coach, this one before his paperwork likely had time to clear human resources.

Brian Knorr, hired back two weeks ago after a stint at Wake Forest, has accepted an offer to be the defensive coordinator at Indiana, according to a source.

Another Air Force source said the move was not yet official, but confirmed that it was likely in the works.

Knorr's title with the Falcons has not been announced, though according to a tweet from an Air Force player Knorr introduced himself to the team last week as the defensive coordinator - the title he held at Wake Forest. Air Force coach Troy Calhoun still has co-defensive coordinator Steve Russ on his staff, though the other previous co-coordinator - Charlton Warren - left this past week to accept the defensive secondary job at Nebraska.

Knorr, an Air Force graduate, had previously served on Air Force's staff. He has also been the head coach at Ohio.

A message left on Knorr's cell phone was not returned Sunday evening.

The news that Knorr had been offered the Indiana position by coach Kevin Wilson was first reported by