Knock Knock. Who's There? Pain

Lopez repairs the Warthog, while Grif takes the blame for its destruction. Meanwhile, at the Blue Base, Tex uses Caboose for target practice, while ignoring Tucker's attempts at friendly conversation. Tex suddenly decides to leave in order to infiltrate the Red base. During the attack, Tex sticks a plasma grenade to Donut's head and, in the ensuing chaos, also attacks Grif and Simmons.