This paper describes the initial development and demonstration of the Precision Integrated Strike Concept Evaluation Suite (PISCES). PISCES was initiated in early 1994 as an internal research and development project to create a virtual operating environment for demonstrating and evaluating Naval strike warfare capabilities using distributed interactive simulation. The overall focus of PISCES is concept evaluation and demonstration of advanced precision strike weapons launched from submarine and surface platforms, and delivered by tactical aircraft. The initial phase of PISCES development involved identifying available modeling and simulation capabilities at the Applied Physics Laboratory that could support a modest, yet relevant, concept demonstration. In the initial phase, six participants were connected over a secure fiber optic cable network. Existing software applications from each participant were modified to make use of the distributed interactive simulation protocols. A strike scenario was crafted to highlight specific advanced features of a planned future cruise missile weapon system and an unmanned aerial vehicle (UAV). Participant actions were shown against the backdrop of this strike scenario and the associated strike plan. Various forms of information were passed between participants over the secure local area network, including data messages between strike assets in the form of protocol data units (PDUs). Key aspects of the concept demonstration were incorporation of a prototype capability to show a command and control node exercising dynamic control of cruise missiles after launch, and the use of a model to show utility of an endurance UAV for providing tactical targeting and surveillance information. Other accomplishments of the first phase of PISCES are described in the paper. Progress made during the second phase of the project is also discussed.