The Airman Training Line Simulator was designed as a managerial aid for investigating and evaluating the various and diverse policy interaction which impact on basic military training and entry-level technical training courses. The user's manual provides user-oriented documentation on the concepts and logic underlying the model. The presentation includes: a comprehensive overview of the system; a description of the simulator's modules and the interrelationships of their inputs and outputs; detailed instructions on input card formats, with appropriate discussion as to the relationship between input parameters and applications of the model; and a description and explanation of reports generated by the simulator and the relationship between individual input data items and output report items. (Author)