Andrey Chernov ache@ was one of first FreeBSD core-team members (1993-2000), and active developer.
He also was a creator of Russian codepage KOI8-R and creator of first Internet channel to Russia in far 90s.
He die after long time of illnes.
parting with him will be 19.08.2017 at Moscow...
A bit long, but definitely worth reading...
Anybody spending sometime hacking net80211 code would definitely recognize some names that are mentioned in the article