Chuck, found this on the Surtass Facebook page. Was added by Ed Hoak on Dec 9, 2016:
"Sad news to pass on to my SURTASS and Hughes/Raytheon (past and current) families. Terry Babcock passed away Tues, 6 December 2016 in Tucson, Arizona. Terry lost his battle with multiple myeloma. I haven't heard or seen an obituary or funeral details yet. I will pass along when I see it."