In 2268, the USS Enterprise conducted a planetary survey of Argus X, discovering a large vein of tritanium ore. Captain James T. Kirk sent a recommendation to Starfleet for a survey vessel to be dispatched to this planet as a result of the rich find. Also discovered on the planet by the Enterprise landing party was the dangerous dikironium cloud creature, which attacked and killed (or nearly killed) five security guards. (TOS: "Obsession" )