On 24 April 1949, a balloon-launch team near Arrey, New Mexico, reported a rapidly moving white object while following a small meteorological balloon. Charles B. Moore’s statement, dated three days later, gives a more qualified picture than the extraordinary speed and altitude figures often associated with the episode. It records an observation through a theodolite, a difficult view and a proposed trajectory that begins with an assumption.
The event is also called the White Sands incident because the Navy crew worked from White Sands Proving Ground. The observing position in the contemporary statement was three miles north of Arrey, not the centre of the proving ground. Later institutional associations should not displace that stated location.
The assessment here is Insufficient evidence. The documents preserve an unidentified observation worthy of historical attention, but do not establish the range needed to turn its angular movements into a measured physical speed or altitude.
The 27 April statement
The scanned records collected by NICAP include Moore’s 27 April 1949 statement and copies with differing redactions. He describes four Navy enlisted men—Akers, Davidson, Fitzsimmons and Moorman—and himself making a pilot-balloon wind run. They released a 350-gram balloon at about 10:20 MST and followed it with an ML-47 David White theodolite.
After the 10:30 reading, Davidson took over the instrument. Moore and Akers looked up to find the balloon and initially thought a whitish object lay along its direction. Its rapid easterly drift did not at first seem impossible for the balloon. The difference between its apparent direction and the instrument’s direction then became clear.
Moore took the telescope and found the actual balloon still in view. He then abandoned the balloon and picked up the other object after it passed the direction of the Sun. One of the men helped point the instrument because the changing angles made following it difficult. This is a specific observation sequence, rather than simply a claim that a balloon expert could never mistake anything in the sky.
The statement describes an elongated ellipsoid, white with a light-yellow shaded area on one side. Moore explicitly said he could not obtain a sharp focus and saw no good detail. Thus the document supports a reported appearance; it does not provide an engineering description of a resolved craft.
What was measured—and what was estimated
Moore described an angular movement of about five degrees per second, estimated with a stopwatch and finger widths. That is important information about apparent motion across the observer’s sky. It is not a direct measurement of miles travelled per second. The theodolite supplied sighting directions; the record does not describe a second, separated instrument establishing range by triangulation.
As the object moved, the statement describes decreasing azimuth, an apparent northerly heading and a diminishing apparent size. Near the end, azimuth became approximately constant while elevation rose from about 25 to 29 degrees. The total observation was around 60 seconds, after which the object appeared to disappear through distance.
An apparent rise in elevation is an angular observation. It may be consistent with an object climbing, but it does not specify a vertical climb rate without knowing where the object was. A constant-altitude object moving closer or a differently oriented path can also change elevation angle. The document alone does not determine a unique three-dimensional trajectory.
The accompanying questionnaire is especially useful because its answer for distance is explicitly unknown. It lists a ground observer following a balloon, roughly a minute in view, no sound, no trail and no visible projections, while again noting poor focus. These limitations belong beside the reported motion whenever the case is summarized.
The assumed high trajectory
The end of Moore’s statement says that, assuming escape velocity, an enclosed track gives an elevation of about 300,000 feet. Its next geographical inference—where such a flight might have passed—is conditional on that reconstruction being true. The qualifying step is present in the original, not an objection introduced only by later critics.
The surviving sketch is labelled as an estimated plan. It links an observer’s account to a proposed route through the region. It should not be displayed or described as if it were a radar plot or a surveyed series of object positions.
One reproduced version adds that a balloon launched shortly afterwards rose to 93,000 feet and ended south of the observing site. The writer used that balloon’s movement to argue against an ordinary free balloon at lower altitude. That is a comparison within the report, not an independent range measurement of the unknown object.
How the Air Force handled it
A 5 May 1949 Office of Special Investigations report records a request to interview the witnesses concerning the Caballo Dam observation. It reproduces a message reporting the theodolite sighting and lists further investigative leads. Its status was pending; that wording records administrative work still to do, rather than a final conclusion.
The second collection includes a later Project 10073 record card listing Arrey, a 60-second ground-visual observation and an unidentified conclusion. It marks no photographs and no physical evidence. The card is a compressed administrative summary, not another witness or a new measurement.
The two files also contain duplicate copies, routing material and unrelated pages. Repetition within a dossier does not multiply the number of observations. The relevant original statement and questionnaire are more informative than a tally of how many pages or agencies carried the story.
Later interpretations
Commander Robert B. McLaughlin promoted the case in a 1950TRUE article, reproduced by NICAP. He presented a much more definite high-altitude, high-speed reconstruction and argued for an interplanetary craft. He acknowledged that he had not personally witnessed this opening encounter. His professional position did not make those interpretive conclusions direct observations.
J. Allen Hynek later discussed the case as an example of inadequate follow-up, drawing on an account he received from Moore. His published discussion emphasizes the observers’ qualifications and the separation of the real balloon from the reported object. That is relevant criticism of the investigation, but it does not remove the original statement’s unknown distance or poor focus.
These layers should remain visible. Moore supplied near-contemporary testimony; investigators circulated it; later authors framed it as a significant UFO case and disagreed about its treatment. None of those steps, by itself, converts an assumed trajectory into a measured one. An unidentified administrative label likewise does not establish a non-human origin.
Map, image and review limits
The pin is an approximate observing-area reference, rounded from the 32°53′N,107°20′W coordinates written on the questionnaire. It is not a recovered instrument mark, an object position or an authorized visitor entrance. The photograph shows nearby Caballo Lake in 2008, not the 1949 launch field or the unidentified object.
Both linked scan collections were reviewed visually, including the original statement, questionnaire, sketch, routing reports and record card. This is not a claim that every Air Force, Navy or private record about the event survives in those compilations. Personal contact details in the scans have not been republished. The soundest remaining conclusion is the limited one the documents support: a short, unusual observation with insufficient range information to validate its most dramatic later numbers.