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Software agents can be a key to supporting a team of homeland security in accomplishing a time-critical task. A major technical issue in designing intelligent software agents is that they need to be capable of anticipating and reasoning out information requirements of teammates involved in a highly dynamic environment, like the U.S. Department of Homeland Security. Pennsylvania State University, Pennsylvania, is working on the vision of employing intelligent agents to assist analysts at the U.S. Department of Homeland Security, using a technique called Collaborative Agents for Simulating Teamwork. A distinguished feature of this technique is that it enables an agent to dynamically infer information requirements of its teammates from a shared mental model about the structure and the process of the team, which is then expressed in a knowledge representation language. The article discusses this model and technique in detail.