Just got a new unit, Police K-9 Unit. As you can see, there's a tutorial for the unit's abilities. Brutal first time using the unit.
Essentially, for this scenario, you would need more k9 units. The k9 can detect bombs, but also sniff out people to arrest. The dogs can bark at them and make them dizzy? Not exactly sure if I should let the k9 unit stay there until the police returns.
Will keep trying to improve.