The overall goal of Project FOX (Fast Open X-Platform) is to deliver test, training, and combat capabilities in relevant timelines and costs to the Warfighter via establishing government-controlled residency onboard fielded weapon systems. Project FOX enables a development sandbox and fieldable combat architecture and software ecosystem to rapidly test, mature, validate, and field capabilities leveraging government technical expertise.Project FOX enables end-to-end acquisition, flight test, and cross-platform fielding by leveraging an on-platform safety assured, cyber secure development hardware and software. This capability is achieved through a robust partnership leveraging government technical expertise from the 309 SWEG, ACC Federal Laboratory, AFWERX, program offices and flight test organizations to create an end-to-end lethal deterrent on a variety of platforms. Project FOX has successfully demonstrated government and 3rd party applications during F-35 and F-22 test events.Ultimately, Project FOX will accelerate the end-to-end acquisition of combat capability for the warfighter, directly enabling the DoD strategic conventional aggression deterrent, and fulfilling the Operational Imperatives in relevant and acceptable timelines and costs.