During the annual Fleet Week Parade held in Geneva, the SDF launched their attack. A sleeper-cell agent hijacked AATIS destroying the majority of SATO's fleet in moments. This was in conjunction with a ground assault launched on the city, seeking to take out the world's leaders and other attendees. While the initial attack was repelled after chasing the SDF fleet into orbit, the Olympus Mons "dropped" into Earth's orbit, dealing significant damage to the SATO fleet, resulting in only two ships surviving, the Retribution and Tigris.