The Silent Guardian protection system is a revolutionary less-than-lethal directed energy application that employs millimeter wave technology to repel individuals or crowds without causing injury. The system provides a zone of protection that saves lives, protects assets and minimizes collateral damage. Silent Guardian produces precise effects at longer ranges than current less-than-lethal systems and provides real-time ability to establish intent and de-escalate aggression. Various commercial and military applications include law enforcement, checkpoint security, facility protection, force protection and peacekeeping missions. The system is available now and ready for action.