Robert Spomer posted the following about John:

Good h.s. and college friend. Was in Army ROTC, graduated with a degree in Chem Engineering, married right out of college, became a chopper pilot in Viet Nam, and was killed approx. one year later. The year was probably 1970, but could have been 1971 or even ’72. I don’t know the details, but those guys were sitting ducks.  I know he died a hero, doing what he believed in.