Why haven't the authority's?

In the Alabama hostage situation used knock out gas down the vent pipe non lethal of course and kicked in the bunker door and ended this standoff wouldn't it be better than making this child be traumatized by being held hostage by the monster that killed his school bus driver
Update: Dark that to also lurks in the back of my mind
Update 2: Xpatinas thank you for your answer if someone has thought of it then lets hope they get busy and bring this murdering monster to swift justice
Update 3: Thanks to everyone else your answers show a true concern for the child's well being and safety
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