This is what I know about John Manhart.
DOB 8-June-1938 DOD 14-January-2019
Parents were Leon and Delores (Whittaker) Manhart
Military 1958-1960 He served on the USS Intrepid CVS-11. Not sure of dates that he served on the USS Intrepid. Possibly 1959.
His wife was Evelyn (Brodowsky) Manhart. They were married 28-December-1962
He does not have a WikiTree ID yet
Wife: Evelyn Brodowsky Married on 28 December 1962