This is a robust, proven and approachable methodology which can be managed by any stake-holder, from the chief of security to the building engineer, from the architect to the owner.  This proposed professional’s practice guide addresses, through a step-by-step and systematic approach, “how to” perform a full risk assessment that assists the project owner and manager decide “why to” either accept the calculated risk and implement only base-line measures, if any, or “why to” reduce the risk to a more acceptable level with the application of performance-based alternative security upgrades or consequence mitigation measures. The documentation requirements also provide added value to the owner for justifying the need to reduce risk or the option to minimize upgrade costs by accepting a certain level of risk or to implement consequence mitigation measures through personnel evacuation by using early warning monitoring and through other recovery strategies.