Model–test–model (MTM) is a process that intends to use high-fidelity/high-resolution combat models to simulate and replicate field operational tests. The MTM Process is divided into 5 phases: * Long-term planning – Identify the responsibility among interested organizations * Pretest modeling – Modeler creates a model of a subject under test * Field test – Modeler performs data gathering of subject under test * Post-test modeling – Subject under test model input parameters are matched with subject under test–field–test output values * Model validation/accreditation – Modeler provides sufficient evidence to a tester that a simulation adequately replicates field testing