Lt Col (retired) None

Lt Col (retired) refers to a retired officer who held the rank of Lieutenant Colonel in a military organization, typically the Army, Air Force, or Marine Corps. This rank is usually above Major and below Colonel. Retirement indicates that the individual has completed their active service and is no longer on duty, but may still hold a position of respect due to their experience and rank. "None" in this context likely signifies that there are no additional details or titles associated with the individual beyond their retired status as Lieutenant Colonel.