In December 2025, the Naval Air Systems Command (NAVAIR) published a new textbook, titled Modeling and Simulation Credibility. The 492-page, publicly releasable book is authored by the SURVICE Engineering Company’s David Hall (with input from numerous contributors) for the Naval Air Warfare Center, Aircraft Division’s Verification, Validation and Accreditation (VV&A) Branch in support of the Navy Modeling and Simulation Office (NMSO). It provides a comprehensive understanding of NAVAIR’s cost-effective M&S credibility assessment process, including details and examples of VV&A activities and how they provide support to the credibility of M&S. Also included are numerous examples that demonstrate not only how to apply the processes to M&S in existing system developments but also how to evaluate, improve, and appropriately document the credibility of any M&S tool used in the Department of Defense.
The risk-based credibility assessment process detailed in the book has been continuously evolved over the past 30+ years and demonstrated for a wide variety of M&S types and applications. The publication is intended to provide fundamental material, background, and training to new VV&A practitioners and system acquisition professionals, as well as review material for experienced VV&A analysts.
