They proceed to battle through the hordes of infected, splitting into two teams. Two female soldiers, Lieutenant Alison Henson and Private Maria Rodriguez, and a male soldier, Bart, investigate the dorms. They break into a female dormitory where they find the deceased naked body of a zombie. Bart attempts to pose with the corpse and is bitten by a mosquito trapped in the room. Fearing contamination but unwilling to execute Bart, who is threatening them with a handgun, Henson handcuffs Bart to a radiator and the two soldiers exit the room, falling back to the van. Meanwhile, the second team, including Alex and Ellis, are attacked multiple times. Eventually, every soldier escorting them is killed, including the leader of the unit, Sergeant Griffin. They fight their way to the professor's laboratory and find the original specimen still imprisoned, as well as a pair of students, Lonny and Sarah, who had survived. They enter the confinement room and extract blood from the zombie, but are forced to kill it when it breaks free. Lonny and Sarah, who had allowed them into the confinement room are overrun and torn apart by zombies, and Alex and Ellis escape while the zombies are feeding on the bodies.