However, due to the extensive damage done during the break-in, the ship could no longer take flight, forcing the Director and Counselor to abandon the frigate on Sidewinder and created a new headquarters for Project Freelancer. The Director, the Counselor, and the majority of the crew survived the crash, and the ship remained intact. With no one available to navigate the ship, the Mother of Invention veered out of control and crashed onto the icy world of Sidewinder. The Mother of Invention continued to serve as Project Freelancer's flagship until several of its agents went rogue and the ensuing battle sent the ship into chaos. However, when the Staff of Charon peppered it with fire, the frigate retaliated by firing its port guns. The frigate also seems to have some battle experience, having engaged three Longsword fighters and the Staff of Charon, an Insurrectionist flagship. It seems the scoreboard that the Director and the Counselor use to rank the Freelancer agents is also positioned on this deck. Upon closer inspection, the Mother of Invention's lower bridge is composed of a large glass viewing platform, unlike regular UNSC Frigates. It also has a launch bay capable of launching at least four Pelicans simultaneously and holding many more. The MAC cannon was used again in The Sarcophagus, firing at, and destroying, a 110-story building. It is armed with a Magnetic Accelerator Cannon, which was used to provide support to a fleeing Echo-479 by destroying a pair of Longsword Interceptors. The Mother of Invention appears to be an MCC (mobile command center) for Project Freelancer.

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