V2 rockets. Most were identified as natural phenomena as meteors. The popular UFO craze by many accounts began with a media frenzy surrounding the reports on June 24, 1947, that a civilian pilot named Kenneth Arnold reported seeing nine objects flying in formation near Mount Rainier in the United States. At the time, he claimed he described the objects flying in a saucer-like fashion, leading to newspaper accounts of "flying saucers" and "flying discs". Soon, reports of flying saucer sightings became a daily occurrence with one particularly famous example being the Roswell incident where remnants of a downed observation balloon were recovered by a farmer and confiscated by military personnel. The story received scant attention at the time, but interest in it revived in the 1990s with the publicity surrounding the television broadcast of an Alien autopsy video marketed as "real footage" but later admitted to be a staged "re-enactment". Various UFO claimants said that they had interacted with the aliens driving the spacecraft and a few said they had visited the crafts themselves. In 1961, the first alien abduction account was sensationalized when Barney and Betty Hill went under hypnosis after seeing a UFO and reported recovered memories of their experience that became ever more elaborate as the years went by. As media accounts and speculation were running rampant in the US, by 1953 intelligence officials (Robertson Panel) worried that "genuine incursions" by enemy aircraft "over U.S. territory could be lost in a maelstrom of kooky hallucination" of UFO reports. Media were enlisted to help debunk and discourage UFO reports, culminating in a 1966 TV special, “UFO: Friend, Foe or Fantasy?”, in which Walter Cronkite "patiently" explained to viewers that UFOs were fantasy. Cronkite enlisted Carl Sagan and J. Allen Hynek, who told Cronkite, “To this time, there is no valid scientific proof that we have been visited by spaceships". Fellow NICAP official Donald E. Keyhoe wrote that Vice Admiral Roscoe Hillenkoetter, the first director of the CIA, "wanted public disclosure of UFO evidence". A 1969 National Academy of Sciences panel reviewed the Condon Report and concurred with its finding, observing that, “While further study of particular aspects of the topic (e.g., atmospheric phenomena) may be useful, a study of UFOs in general is not a promising way to expand scientific understanding of the phenomena.” Referencing the panel's conclusions, the Pentagon announced that it would no longer investigate UFO