To date, computer-based virtual worlds that attempt to replicate human behavior have been plagued by a number of technical challenges. Most human behavior systems have been singular in nature and are customized to work with a specific simulation system. The Joint Synthetic Battlespace – Air Force (JSB-AF) effort during FY2003 – the JSB Experiment 1 – featured numerous improvements in military modeling and simulation across a variety of disciplines. One of the major achievements of the JSB Experiment was to demonstrate the ability to selectively enhance the modeling and simulation of a given phenomenology in a federation by integrating higher fidelity, or level of resolution, components. This was done for sensors, the environment, and human and organizational behavior modeling. Three main concepts were explored in terms of human and organization behavior representation. First, the JSB Experiment explored a software development kit (SDK) approach that permits intelligent systems and behavior representation to be embedded in different applications and simulation systems. Second, an integrative architecture for human and organization behavior modeling techniques was employed. In this way, the ability to simultaneously utilize a variety of specific human and organizational behavior representation techniques became possible, and allows the techniques to be selected based on the specific scenario or use-case requirements. Finally, the concept of a knowledge structure and execution engine that can be dynamically altered to model adaptive behavior was used, and we discuss the future implications of this capability.