Catherine/Galileo

Galileo is the second chapter of Spartan Ops ' third episode, Catherine.

Summary
Fireteam Crimson arrive to Galileo Base via Pelican dropship. As they land, they are met by a small team of UNSC Marines. As Crimson and the marines engage Covenant troops Dr. Owen, one of the base science personnel, informs Commander Palmer that Covenant forces are after their computer systems in order to gain access to the signal data Crimson had recovered earlier. Palmer tells her to shut down all systems within the facility as Crimson and the marines secure the area. Dr. Owen, however, tells the commander that she can't, as she and the rest of the base survivors have already locked themselves away in a safe room underground. Spartan Jared Miller accesses the base schematics and locates three generators that power Galileo's computer systems. With the targets painted, Palmer orders Crimson to deactivate them. After disabling the first power core, Spartan Robert Dalton informs Commander Palmer that several Banshees are inbound towards Galileo Base. Palmer then warns Crimson of the incoming threat. At the same time, Miller receives word from Covenant comm. chatter that Parg Vol is somewhere nearby. Commander Palmer tells Crimson that if they see him, they take him out immediately.

As Crimson works to shut down all computer systems, a UNSC Marine informs them that Parg Vol has escaped from the area. This annoys Palmer, but is reassured by the fact that they will find him again soon. After Crimson deactivated all power cores, Palmer tells Dalton to re-activate the base defense system remotely. Before he can activate the system properly, Dalton realizes that the Covenant have jammed the wireless up-link from the Infinity. Miller then paints a waypoint over the base's automated defense turrets for Crimson to locate and activate. Crimson successfully does so and Galileo enters lock-down. Shortly afterwards, another wave of Covenant reinforcements arrive. Crimson, with the aid of marine survivors, successfully repel the attack and secure the rest of the facility. Commander Palmer informs Dr. Owen that it is safe to come out and tells her to bring Galileo up and running again so that she and her team can find out why the Covenant were after their signal data. Palmer also requests Miller for a report from the marine who let Parg Vol escape.