Provided is a human guard enhancing 
multiple site security system comprising one or more human guards, 
peripheral equipment positioned at one or more sites, said 
peripheral equipment comprising one or more of a plurality of sensors, video cameras, positioning systems, and mobile communication and 
data processing equipment, said 
peripheral equipment being further capable of collecting and transmitting event-related and 
environmental data, one or more checkpoint systems capable of receiving, 
processing into a standardized protocol, and further relaying the data received from said peripheral equipment, and of providing said one or more guards with information based on the data, and one or more stations capable of 
logging, 
processing, and reporting the data relayed from said one or more checkpoint systems to provide a 
security system status and to facilitate human supervision, situation analysis, 
decision making, and intervention. The 
system includes a computer implemented 
communications protocol, which is an 
XML based 
communications protocol for real time security alert monitoring purposes. The 
XML based 
communications protocol consists of numerous modules which receive and convert 
data messages from varying security devices and sensors, standardize, translate and send converted messages, and encrypt and decrypt said 
data messages.