Do you guys think this could be one big reality show that the family members agreed to sign their children/parents/SO up for? Basically, each family is paid $10,000,000 and the entire show is caught on film... taping in the hatch, etc. The others are thrown in there to mix things up and keep the audience captivated. Hard to say with the kids being involved and death all around, but it could be an extreme reality show. You never know and this would explain a lot and it wouldn't be a supernatural explanation either.