John died on June 3, 2024 at the age of 87.

John, a MIT graduate, began working at the Manned Spacecraft Center in the Flight Operations Directorate almost from its inception in the early 1960’s until 1972 when he left following the post-Apollo RIF.

 The link to John's oral history is:  https://historycollection.jsc.nasa.gov/JSCHistoryPortal/history/oral_histories/BoyntonJH/BoyntonJH_3-19-09.htm