"This research was part of a larger program to develop a methodology for multi-Service training of Close Air Support (CAS), using Distributed Interactive Simulation (DIS) technology. This paper summarizes all assessment of user reactions to the training. Survey questionnaires. group interviews, and observations of the training were used to obtain data on to questions. What value is added to existing Service training cycles by the DIS methodology developed? How well did the training work? A key finding was that the distributed methodology fills a critical gap in training multi-Service CAS coordination tasks. An important potential application of the research is to 'ramp-up' training in preparation for rotations to combat training centers. Many lessons were learned about how to develop and apply survey and interview instruments as part of a larger evaluation of DIS training. For example, we 'discovered' that for multiple sites and services 'one size does not fit all.' Assessment instruments must be carefully prepared in different versions to suit the varying perspectives and roles of multiple services."--DTIC.