There aren't many details at this time, but the news trickling out is that Timy Dutton was sky diving with a friend with whom he collided in mid air, knocking him unconscious. His parachute was not deployed and he fell to his death.
The friend he was diving with (apparently) suffered minor injuries.
The only news story I've seen is from KCRA3
All other information I'm seeing is Facebook and other social media.