Jon says the most inspiring element of Chris's personality was the "impossibly high standards" he set for himself.
"It was this wonderful thing about him and his downfall because he believed that it's wrong to get too comfortable in life. It's wrong to take the easy path. You're here to live, not to sit on the couch," he says. "Everyone can take something from that, and it's just, get outside your comfort zone. I mean, all of us want to stay with what we know and what's comfortable. And he believed you grow and have the best adventures and learn the most if you just step outside that comfort zone."