Description: This Phase I proposal seeks support to extend the BrahmsVE architecture to support a multi-agent human-centric simulation of a hypothetical future ISS which is equipped with interior agents (PSA) and exterior tele-operated agents (Robonaut). An Agent Broker module will be constructed as well as detailed interior and exterior ISS 3D virtual world models containing PSA, Robonaut, human (astronaut-agents) and major subsystems. Input from expert advisors at several NASA centers will be sought to create this macro-level simulation of work practice within a hypothetical future ISS.