One of my duties in the Integrators Project is to post the G2G points announcements when members pass 100,000 points and "earn their pilot's wings," when they hit 500,000 points, and when they reach Astronaut at 1,000,000 points.
Every few days when I check the G2G user list I often see Keith's profile and I've stopped to read it a few times because his position in the list had stopped advancing. In doing so I also read his Meet our Members interview and got to know a little about him.
While I do not know the details of his passing I had noticed that Keith had Wikitree contributions the day before he passed indicating to me that it may have been sudden.

It reminded me to take each day as a blessing, to enjoy all that I have, and it reminded me to focus on the important things and let the unimportant pass unnoticed. I think Keith said it best:
Life goes fast – you don’t want to miss it!
Thanks Keith for your contributions to the community and God bless your family!