[Praxeologue]

An oxygen mask around a passenger's neck is consistent with the narrative to date.

The best description is here. SAMs are designed to exploded 20+ yards from an aircraft and spray shrapnel. The airbags would have dropped within five seconds and the passengers would have remained conscious for up to thirty seconds.

[McGruff]

The airbags would have dropped within five seconds and the passengers would have remained conscious for up to thirty seconds.

That's a question I had. Why didn't all the air masks deploy as soon a cabin pressure dropped.