glojo, fair point; banter is good. It fails if the observers don't grasp it, though. The Navy and the Air Force can (and does) contribute to this very efectively. The Army can't without silly-loads of supporting logs in place. That's not a criticism of the Army; it's horses for courses.
The Navy has trained, been equiped and applied this for years in the Caribbean. An integral part of the supporting stores pack has always been riot control kit. People always seem to riot and more likely loot when bad stuff happens.