Unfortunately, you and your entire family were in a local bank when a group of bank robbers took over the bank.
Three of the four robbers escaped with their loot, but the fourth one was abandoned after he was shot in the thigh by the security guard.
He subsequently shot the security guard in the bank vault and took your family and another family as hostage, and locked the vault door.
You and one of the parents from the other family managed to overcome the wounded robber and shot him in the head.
From the police radio of the security guard, you learned that it would take the bomb squad four hours to blast open the vault door.
The oxygen inside the vault can only support everyone inside for two hours.
What would you do?