Choi is the Master Chief Petty Officer of the U.S. Navy. He is stationed in Hawaii, where he conducts diving missions to kill the underwater zombies that survive on the ocean floor. The narrator interviews him more than a decade after the war has ended, and yet, there are still zombies lurking and the armed forces are still working on stamping them out. The zombies pose risks when they wash up on beaches and when people are out at sea. Choi describes the heavy diving suit that he and his colleagues wear to conduct their operations, which protect them from zombie bites. He is now involved in studying the movements of these underwater zombies so they can figure out more efficient ways to destroy them. When the narrator asks him if they might use robots to do this kind of work in the future, Choi says that would be impossible because they would lack the “instinct” and the “heart” to be successful at it. Choi’s account reveals the superiority of human beings in the fight against the zombies, saying that their special human qualities—not just “intelligence”—give people an edge over zombies.