Description: Taken during the Midwest wave of 1966. One of the best accepted UFO photographs. The so-called "swamp gas" explanation given by Air Force investigator J. Allen Hynek would stay with him for some time. Prompted by the lack of an explanation, and knowing that there was something to the Michigan wave, The US air Force used the idiotic explanation for the sightings. Hynek would later regret the explanation, and go on to become one of the most revered UFO researchers of all time.