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In the pursuit of behavior modeling for dynamic policy management and usage control, mission centric systems are the most important to examine, not only because situation dynamics can dramatically alter the collaboration environment, but also since behavior in these systems is constrained by mission objectives or workflows. Traditional mission decomposition into tasks and objectives has led to static policy deployment and role based views of access control and, but we propose Risk-Adaptivedoi:10.1109/cogsima.2013.6523823 dblp:conf/cogsima/PecarinaL13 fatcat:4jm6qljhmbap7iiuthc7qphvia