What mission is the reusable space plane operated by the US Space Force expected to lift off for?

The reusable space plane operated by the US Space Force is expected to lift off for its 8th mission as part of its ongoing program focused on enhancing national security and advancing space capabilities. This program aims to demonstrate the viability of reusable space transportation for various military and research applications. With each successive flight, the space plane collects valuable data on its performance, contributes to operational testing, and showcases its versatility for different missions, ultimately helping to inform future developments in military space operations. The answer identifies the mission number correctly reflects the milestones achieved by the program so far.