Most modern countries are already filled with all kinds of cameras on almost every corner for various reasons, both private and public. We also know that facial recognition software is being used widely. --- Harness that technology to 'seek out' terrorists and others on 'wanted' lists and instantly pass off the information. And if possible, once a wanted target is locked on, use the software to follow the target.

Use the amount of force necessary depending on the target. If a known terrorist, treat as armed and deadly and shoot to kill.

Such software is already being used at large events, like concerts and such.