DoD 5000.1, "Defense Acquisition"
This directive encourages the use of M&S by stating
that "models and simulations shall be used to reduce the time, resources, and
risks of the acquisition process and to increase the quality of the systems
being acquired. Representations of proposed systems (virtual prototypes) shall
be embedded in realistic, synthetic environments to support the various phases
of the acquisition process, from requirements determination and initial
concept exploration to the manufacturing and testing of new systems, and