A police officer is on patrol when he gets a call about a domestic dispute. When he arrives at the scene, he finds that an armed man has taken his girlfriend hostage and barricaded himself inside his apartment. The officer calls for backup, but when the other officers arrive, they realize that their standard guns won’t shoot through the barricades. They don’t have surveillance equipment to see inside the apartment, which would give them crucial information about the assailant and the hostage. If the assailant starts shooting at them, they …