The room is said to be 8' high and 6' X 7' wide and long. The man has a small pipe for air, and maybe some food and water. He is armed and vicious, and has shot at children before. He sees this boy as not a person, but a tool to keep him out of jail. He knows he is trapped.
The situation is such that I imagine if they attempted to send perhaps an odorless, colorless gas through the pipe that they have already delivered the boy's medicine through, he would know and kill him. He may get tired of hearing him crying and kill him. He likely knows he will never be free again, no matter what they promise him.
The circumstances remind of a story that is in some bibles. In the story, a man approaches Jesus and tells him that he has a sparrow inside his fist. He demands that he tell him if the bird is alive or dead, knowing that he only has to squeeze his fist to kill and wants to prove Jesus wrong with his question. Jesus replies 'It is as you will.'
This young boy's life is within that man's hands and the choice is his alone. The cases in the other areas were different. The danger was over, the shooter was separated from his victims, by distance or death. This man is in the living space with this small child.
I don't have a lot of hope, it depends on a madman. it's possible they are waiting for him to go to sleep, and then break in. But he might wake. If he slept, they might gas them both and break in.
I don't think hostage negotiation is going to work. Even the most insane or criminal mind knows logic, just as we know gravity. That man knows any offer but surrendering to be tried for murder and kidnapping when he comes out of that bunker, is a lie.
Best chance is he gets worn down and passes out. But for all we know, he is taking meth or something to stay awake. And that makes it much worse.
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