 In this episode, Walter Skinner (Mitch Pileggi) disappears after he receives a disturbing message from his past.Mulder and Scully are charged with finding him but as they start to uncover his secrets, they begin to question whether they can trust him.In 1969, during the Vietnam War, a platoon of U.S. Marines including Walter Skinner and John "Kitten" James are tasked with escorting a crate marked "MK-NAOMI" to a rendezvous point.