Documents / Hearing transcript
This declassified transcript, released by the Office of the Under Secretary of War, records a March 1952 presentation by Captain Edward J. Ruppelt on the Air Force's reorganized UFO investigation. Ruppelt reports that about 20% of roughly 800 cases remain unexplained and notes clusters of reports near Los Alamos, Albuquerque and Oak Ridge. He discusses the Lubbock lights photographs, the Phoenix 1947 photograph and the Mantell case. He concludes that the Air Force has no firm evidence about what the objects are.
From the source: Release of 2026-09-18 Incident: 3/26/52, Boston, Massachusetts. This document is a transcript of a March 1952 presentation by Captain Edward J. Ruppelt outlining the U.S. Air Force’s reorganized investigation into unidentified flying objects (UFOs). The presentation previews prospective technical methodologies, such as diffraction-grating photography and radar-scope synchronization, that were subsequently incorporated into Project Blue Book, a U.S. Air Force program active from 1952 to 1969 that investigated the nature and origin of UFOs. Ruppelt explains that out of approximately 800 historical cases reviewed by the Air Force, approximately 20% remained unexplained after technical analysis. These unresolved reports were sourced from credible military personnel, commercial pilots, and other qualified technical observers. He highlights geographic report concentrations around sensitive national security and nuclear weapons installations (including Los Alamos, Albuquerque, and Oak Ridge National Laboratories) and notes recurring anomalous characteristics, including silent high-speed flight and radar detections indicating unconfirmed air speeds between 1,000 and 3,500 miles per hour. Emphasizing that the Air Force found no conclusive evidence regarding the nature or origin of the phenomena, Ruppelt underscores the national security need for a systematic physical data collection effort to better evaluate these sightings.
7 that. However, they did get their angular measurement across the sky, and it came out to be 30 degrees per second. Now, that's the only measurement we've got on these things. We didn't hear about it till about a month after it happened, and I went down and spent quite a bit of time with these people. At first, we thought it was just one big hoax, that they were just out to get some publicity, but on investigating these people and talking to them, we found out that there was, the professor of, I believe he's head of the physics department at Texas Tech, a gentleman who was head of the petroleum engineering department at Texas Tech, a gentleman who'd spent the last five years in Alaska studying the aurora, and a doctor of mathematics, and they had an astronomer who actually who didn't see these, although he was in on the investigation. Well, after they found out the Air Force was interested in it, they took an entirely different view. I mean, when they found out that it wasn't one of our missiles, then they began to wonder what it was, but the thing had happened and it was finished and they couldn't get any more information for us. Now these pictures, well, incidentally, before that, they put a couple of pieces in the local newspaper to try to determine who else had seen these things, and they put their names in the paper so that people could write to them and say, "I saw it" or "I didn't see it," and they got a lot of publicity. Consequently, everybody in Lubbock, Texas was sitting out at night waiting for these things to go over. And a college freshman at Texas Tech had his camera ready when they went over one night, and this is the picture that he got. Now these are, this is one formation that went over and this is another formation. He, his story is that he saw one go over and all of a sudden it dawned on him, "Well, I might try to get a picture." He was a fairly good amateur photographer. He took these with a Kodak 35. He shot them at 1/10th of a second at F3.5 on Plus-X film. He tracked them, and consequently, we don't know whether this blur is due to the movement of the object or the movement of his camera since he shot them at 1/10th of a second. This is the first formation that went over, and this is the second formation. Now, we've tried every way that we know of to prove that these pictures are faked. I've talked to the kid, and in fact, I talked to him twice. We've had OSI talk to him about three times, and the final, last time, they got him alone and they said, "Now look, we'll let you back out on this if you want to. We'll never tell anybody. As far as the newspaper's concerned and everybody you've sold these pictures to, why they're really good photos, but if you'll just confess to the OSI, why we'll drop it." But he said, "No," he said, "these are pictures of something that flew over Lubbock, Texas on..." Well, this was, these happened to be taken on the 31st of August. He said, "I don't know what they are, but," he said, "I took the pictures and that's all I know," and he signed a sworn statement for us, so we had to drop it right there. I mean, we've got no way to... (Question from audience) • "Do these pictures check with the observations of those five?" • "No, sir. I was going to just mention that. The college professors say that these pictures are faked. I mean, they won't believe them at all. They say the things that they saw, they know were too dim to ever take a picture of. Now, we cross-checked with the kid on that, and he said, he said, 'That's right.' He said, 'After I took these pictures,' he said, 'I didn't
Hearing transcript, from the pursue collection. The PDF is mirrored here; the original link is above. 19 pages are in the text index: search them above, or from the library's search.