This proposal builds upon and completes last year's successful Center Innovation Fund (CIF) proposal, Engineering Concept Design & Assembly in VR (now called the Mixed-Reality Engineering Toolkit (MRET)), to create a cutting edge, inter-center collaborative engineering tool in VR for NASA domains. Additionally, it will create an easy to use and powerful communications infrastructure for all VR NASA applications using the Goddard Mission Services Evolution Center (GMSEC) architecture. Key generic benefits include reduced cost and errors for creating concept design and assembly, reduced time for design and developing assembly and tool paths without costly 3D printing or manufacturing, reduction of errors, reduced need for a mockups and travel, and reduced costs and time needed for cognitive load awareness in telerobotics operations. Specifically, a feature-complete, beta application for Satellite Servicing Projects Division (SSPD) projects based on Restore-L requirements will be finalized..The year-end goal will be to demonstrate a real-time collaborative engineering session in VR with personnel from NASA Langley Research Center (LaRC) and Goddard Space Flight Center (GSFC) working together on assets relevant to Langley's Engineering Design Studio (EDS). The MRET software will incorporate new features and new assets relevant to the EDS, and will develop a full-featured collaborative tool for VR using GMSEC. The tool should then be ready for application to other NASA Centers.