A terribly sad moment, of course, and very upsetting for the family, crew, colleagues and passengers, so I'm sorry if this sounds like I'm making an inappropriately trivial point - but I couldn't let that passenger's comment go about being "really grateful that the backup pilot was there".
Not blaming the passenger, but it says a lot about how the cockpit crew are perceived by the general public: "the pilot" does everything while the "co-pilot" sits there like a spare.
But back to the current situation, I'm shocked to read how young the captain was. A very sad day.
Edit: What a very nice, heartfelt email from the CEO.