The pack 1 failure had to be the worst luck in the world(as it is designed to keep smoke out of the cockpit through a higher pressure level) and happened after the fire warning sounded. Perhaps things were already bad at that point, I'm not sure. But I believe they followed the checklist to manually turn off the other packs. The checklist has subsequently been changed by Boeing.
No kidding. These poor guys. Not to mention the O2 mask. They did a great job.
This was a "Fate is the Hunter" flight from hell. I hope we get something out of it. The report was well done.