The planet Demios is of strategic importance within the Pegasus Sector. The uniqueness of the planet is its gravimetric trajectory in terms of the Core Worlds to Sol. It is primarily used for its sea and space/airfield, which is key to controlling traffic in the entire Pegasus Sector. Several high brass from nations and joint services are onboard for plans to begin Operation Roundhammer: retaking of the planet Demios. The plan calls for the 3rd Marine Space Fleet composing with the 15th Joint-Earth Fleet, Pegasus Sector to arrive and start Operation "Domino" which begins firing upon the planet surface. Once the aerospace attack begins, squadrons of fighters will be deployed and Armored Personnel Carriers (APC) battalion landing teams.