Implementing Model-Based Systems Engineering (MBSE) throughout an organization is significant change from previous practices.  This paper explores the efforts of the Air Force Life Cycle Management Center (AFLCMC) Simulators Division (WNS) MBSE team to develop, implement, and sustain a Digital-First Culture at WNS.  The strategies employed to overcome challenges faced by a sustainment-focused organization are discussed.  The Simulators Division is primarily involved in sustainment efforts rather than system development.  The benefits of MBSE and Digital Engineering are more readily apparent in the system development and procurement phases of a product life cycle.  However, there is still significant benefit to be realized using MBSE in the sustainment phase. This paper also investigates other external efforts aimed at promoting the adoption and advancement of Digital Engineering principles. The paper concludes with a summary of lessons learned and recommendations on implementing effective organization change management for MBSE and Digital Engineering. 

Keywords
MODELING

Additional Keywords
Model Based Systems Engineering (MBSE), Digital Engineering, Organizational Change Management (OCM), Digital Materiel Management (DMM), Sustainment