Jack passed away on June 30, 2025 at the age of 88. He retired from NASA in 1989 after a 30-year career at MSC/JSC.

The link to Jack's  death notice is:  https://neptunesociety.com/obituaries/league-city-tx/john-johnson-12439052

Jack's Obituary - https://everloved.com/life-of/john-henry-johnson/obituary/ 

A memorial service is pending.