5x18 - Red vs. Blue

The Reds see the Blues advancing on their base on the surveillance system, prompting them to find their way out of the cavern to invade the deserted Blue base. Caboose asks Sheila, now uploaded into the ship, where O'Malley is, relaying Tex the answer. Tex then confronts Church, calling him "O'Malley." Doc and Sister head through the caves, where they find Lopez's disembodied head.