Continuing to observe acts of cruelty, Irwin attempts to unify the prisoners by building a "castle wall" of stone and mortar at the facility, which in many ways resembles a medieval castle. Envying the respect Irwin is clearly receiving, Winter orders his guards to destroy the wall. Aguilar, directly involved in its construction, takes a stand before the bulldozer. Winter orders sadistic sharpshooter Cpl. Zamorro (David Alford) with a coded hand gesture to fire a normally non-lethal rubber bullet directly at Aguilar's head, killing him.