Among the more difficult and time-consuming steps in the training development process is the elicitation from subject matter experts (SMEs) of the skills and knowledge to be taught. As the use of advanced multimedia training technology has become more common, training development increasingly involves translating SME knowledge into appropriate media representations. This paper describes a procedure for identifying specific tactical decision making (TDM) knowledge requirements, and possible media-based representations of that knowledge. The intent of this procedure is to provide the basis for constructing tactical training documents using multimedia technology. The procedure, called Sea Stories, is built around the construction and analysis of a scenario by one or more SMEs. Sea Stories allows a team of domain experts to "articulate" their knowledge by describing a scenario (their sea story) in a series of computer-based storyboards. These storyboards include, for example, spatial situation overviews, team interaction diagrams, task flow charts, and equipment diagrams; and are integrated though a detailed timeline. Applied training research provides knowledge frameworks that can be used to guide and prompt experts to identify and refine components of the knowledge. The storyboards provide the basis for identifying these knowledge requirements, and the media representations that are associated with a tactical problem. Computer Supported Collaborative Work (CSCW) technologies facilitate communication among groups of subject matter experts using annotation techniques and revision control and tracking.