They also were led into a museum of Cochran""s other oys - Kupfer called Cochran "the all-time genius of the practical joke.Gruber""s partner Mathias Targo urged him to eliminate McClane: "Stop toying with him and kill him now.Stephen located the maintenance control room like the others and a maintenance manual with various charts and mall plans, but failed to notice that an ex-maintenance man zombie (Warner Shook) was ominously approaching closeby.Personnel Officer: Will ya work Jewish holidays?Bickle: Any time, anywhere.He offers only a few biographical facts about his background - he is a twenty-six year old ex-Marine [Travis is possibly a battle-scarred Vietnam Vet, but not specifically identified as such.