Original sentence: ...For many years I have lived with a secret, in a secrecy imposed on all specialists and astronauts.Although Cooper made no specific mention of this in 1985 when he addressed a United Nations Panel Discussion on UFOs and ETs, which was chaired by then Secretary-General Kurt Waldheim, Cooper did state, "I believe that these extraterrestrial vehicles and their crews are visiting this planet from other planets which obviously are a little more technically advanced than we are here on Earth.Cooper said he viewed prints of the object before the film was shipped back to Washington.I can now reveal that every day, in the USA, our radar instruments capture objects of form and composition unknown to us.In addition to Cooper, Dr.James E.McDonald interviewed the two photographers, who corroborated Cooper's story.NASA astronaut Gordon Cooper on many occasions (including in his book Leap of Faith) stated that while he was stationed at Edwards Air Force Base, a classic saucer-shaped aircraft landed there on May 3, 1957, and was filmed by a startled technical film crew.The case is listed in Project Blue Book, with the official explanation that it was a weather balloon.The incident is Case 41 in McDonald's Congressional testimony in 1968 discussing the best UFO evidence
Edited sentence: However, he made no mention of this in 1985 when he addressed a United Nations Panel Discussion on UFOs and ETs, which was chaired by then Secretary-General Kurt Waldheim.NASA astronaut Gordon Cooper has been reported by pro UFO organisations as saying he witnessed a classic saucer shaped aircraft land in the 1950s, and filmed it