At 57:05, when Andy and Jenny are about to leave the apartment with the old man, the camera pulls back showing him "wearing" the lower legs of a Caterpillar 5000 Work Loader, better known as the Power Loader from "Aliens" that Ripley uses to fight the queen at the end. It appears as though the foot plates have been removed to allow the actor to wear them with the suspenders he has on and one leg is stamped with "ZOMB 1970MAY19" with a suspicious looking "Umbrella" type logo.