This report summarizes the results from the transitional review of Mission Support and Test Services, LLC (MSTS) at the Nevada National Security Site) in Las Vegas, Nevada, and associated satellite facilities, conducted from May 23 to August 4, 2022, and provides the Acting Director of the Office of Environment, Health, Safety and Security with the necessary information to make the final decision regarding MSTS’ continued participation in DOE-VPP at the Star level.