Our unique position allows us to begin assessing models for hypersonic flow prediction on real-world systems and immediately begin to develop tools that will support acquisition, tracking, and trajectory prediction for hypersonic cruise missiles (HCMs) accomplished largely through signatures electro optical/infrared (EO/IR), radio frequency (RF), radar cross section (RCS) and acoustic. For the Phase I effort, the focus is to develop methods to predict the aero-thermal environment over HCMs, identifying strengths and weaknesses of existing and alternative modeling methods, and demonstrating the computational and validation approaches for nominal hypersonic cruise missile (HCM) shapes. Approved for Public Release | 21-MDA-11013 (19 Nov 21)