when evaluated by later generations, retired Marine Corps Major Donald E. Keyhoe would be regarded as a more objective, honest, and scientific ufologist. It was during the late stages of Blue Book in the 1960s that Hynek began speaking openly about his disagreements and disappointments with the Air Force. Among the cases about which he openly dissented with the Air Force were the highly publicized Portage County UFO chase, in which several police officers chased a UFO for half an hour, and the encounter of Lonnie Zamora, a police officer who reported an encounter with a metallic, egg-shaped aircraft near Socorro, New Mexico. In late March 1966 in Dexter, Michigan, two days of mass UFO sightings were reported, and received significant publicity. After studying the reports, Hynek offered a provisional hypothesis for some of the sightings: a few of about 100 witnesses had mistaken swamp gas for something more spectacular. At the press conference where he made his announcement, Hynek repeatedly and strenuously stated that swamp gas was a plausible explanation for only a portion of the Michigan UFO reports, and certainly not for UFO reports in general. But much to his chagrin, Hynek's qualifications of his hypothesis were largely overlooked, and the term swamp gas was repeated ad infinitum in relation to UFO reports. The explanation was subject to national derision. In his reply dated October 7, 1968, to a request for scientific recommendations regarding Blue Book from Colonel Raymond Sleeper, commander of the USAF Foreign Technology Division, Hynek noted that Blue Book suffered from numerous procedural problems and a lack of resources, which rendered its efforts "totally inadequate". Hynek also noted that one wag had bestowed upon Blue Book the epithet of "Society for the Explanation of the Uninvestigated". Center for UFO Studies (CUFOS) Hynek was the founder and first head of the Center for UFO Studies (CUFOS). Founded in 1973 in Evanston, Illinois (but now based in Chicago), CUFOS advocates for scientific analysis of UFO cases. CUFOS's extensive archives include valuable files from civilian research groups such as NICAP, one of the most popular UFO research groups of the 1950s and 1960s. Speech before the United Nations In November 1978, Hynek presented a statement on UFOs before the United Nations General Assembly's Special Political Committee on behalf of himself, Jacques Vallée, and Claude Poher. The speech was prepared and approved by the three authors. Their objective was