The USAF has assumed responsibility for providing the Department of Defense's (DoD) narrow- and mid-band strategic and tactical communications. The Space and Missile Systems Command's (SMC) Fighting SATCOM mission envisions a DoD hybrid satellite architecture, providing enterprise-wide, path diverse, seamless warfighter communications across all operating domains in contested, denied and operationally limited environments -- through flexible terminals accessing multiple military and commercial capabilities. Omnispace's next generation hybrid communications system seamlessly interweaving satellite and terrestrial communications aligns with and can be a key enabler of this vision. Omnispace, drawing on its legacy in designing and fielding the hybrid XM-Sirius radio (combining mobile satellite services and the Ancillary Terrestrial Component), will field in mid-earth orbit a new constellation enabling seamless and low-cost commercial MSS, ATC, IoT and Blue Force Tracking. Without the need to rearchitect for military uses, Omnispace's hybrid satellite-terrestrial transitions can be extended to provide DoD with global, pole-to-pole connectivity, enabling warfighters and platforms through next-generation software defined radios to maintain seamless communications despite crossing domains. Omnispace intends to use SBIR Phase II/Space Pitch Day resources to continue the research, architecture development, modeling and testing required to operationalize this new, resilient global strategic and tactical communications capability.