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.- • PROJECT 10073 RECORD CARD
r-------·
I. DATE
-• :L LOCATIOH 12. CONCLUSt<:>N$
--
a Was Balloon
13 December 1961 ~ashington, D.C. a Probably BGloon
4. TYPE OF OBSERVATION
a Possi bly Boll oon
3. OAT!•TIMI! GROU~
a a Was A.ircroh
Local 1705 ~Ground- Vi suol Ground· Rodar
a Proba bly A>"raft
13/2005Z a Possi bl y Air"oh •
GMT aAir-V•suol a Ai r- Interc ept Rodor
5. PHOTOS 6. SOURCE a Was As
================================================================
PROJECT 10073 RECORD CARD -- TRANSCRIPTION
File: 1961-12-8698797-Washington-D-C.pdf
Transcribed from document image by Claude Sonnet 4.6
================================================================
FIELD 1 -- DATE: 13 December 1961
FIELD 2 -- LOCATION: Washington, D.C.
FIELD 3 -- DATE-TIME GROUP: Local 1705 / GMT 13/2005Z
[Note: Supporting message RJEZBL 4
gives the correct time as 1705 EST
= 2205Z; the "2005Z" on the record
card appears to be a transcription
error for 2205Z.]
FIELD 4 -- TYPE OF OBSERVATION:
Ground-Visual [X]
Ground-Radar [ ]
Air-Visual [ ]
Air-Intercept Radar [ ]
FIELD 5 -- PHOTOS: No [X]
FIELD 6 -- SOURCE: Civilian
FIELD 7 -- LENGTH OF OBS: 1-3 minutes
FIELD 8 -- NUMBER OF OBJECTS: One
FIELD 9 -- COURSE: East
FIELD 10 -- BRIEF SUMMARY:
Dark grey object moving from W to E & passing overhead. In sight
3 minutes according to one observer. In sight for 1 min according
to another at different location. No success at triangulation.
Plots different. Obj was solid. Had a pulsating orange-brown glow.
Object sharply outlined. Diamond shaped. About size of piper cub.
Sighting fm downtown Wash D.C. Got out of car and stopped traffic.
Other rpt obj also diamond shaped. Witness at Georgetown University
Obj described only as dark & light no color given. Light at bottom,
dull. Form 164's completed. Third witness added little or no info.
FIELD 11 -- COMMENTS:
UNIDENTIFIED
FIELD 12 -- CONCLUSIONS: Other: UNIDENTIFIED [X]
Unknown [XX]
[Note: The "Other" line carries
"UNIDENTIFIED" typed in; the Unknown
checkbox also appears marked. Field 11
comments state the conclusion plainly
as UNIDENTIFIED.]
Form: ATIC FORM 329 (REV 26 SEP 52)
----------------------------------------------------------------
SUPPLEMENTAL DOCUMENTS IN THIS FILE
FTD Form 164 (JUL 61 edition) -- Witness 1
Location at time of sighting: George Washington University parking
lot, downtown Washington D.C. Attention called by a GWU guard.
Date/time: 13 December 1961, 5:15 PM EST.
Duration: 3 minutes. Confidence: fairly certain.
Sky condition: Night (early evening), bright.
Object color: Dark grey; a dull light at the bottom.
Shape described: "A large four-sided diamond of dark color."
Object behaviors: Flash/flicker yes (the lower light); all other
behavior questions answered No.
Disappeared: Behind buildings to the east.
Edges: Sharply outlined. Solid appearance.
Observer sketch (Q. 17): Diamond shape, dark area (body), light
area (bottom). Arrow pointing east showing direction of travel.
Size estimate: About 20 feet long. Angular size: "not much"
(match head would not cover it at the observed distance).
Speed estimate: Approx. 30 mph.
Distance estimate: 1/2 to 3/4 mile.
Initial bearing: True North 225 deg., horizon 45 deg.
Final bearing: True North 180 deg., horizon 45 deg.
Observer opinion: "Have no idea."
Personal data: Age 26, Male. Washington D.C.
Questionnaire completed: 29 December 1961.
Summary page: Witness was parked at GWU, walked through parking
lot, guard called attention to object in sky. Object was diamond
shaped and dark except for dull light at bottom. Moved at
constant speed and altitude. No sound heard. Watched until it
disappeared behind buildings.
FTD Form 164 (JUL 61 edition) -- Witness 2 (primary account)
Location: Virginia Ave. and "E" St. N.W., Washington D.C.;
specifically on E St. just east of intersection, heading west.
Date/time: 13 December 1961, 5:05 PM EST (1705 local, 2205Z).
Duration: 1 minute directly observed; witness later revisited the
site multiple times and estimated 3.5 to 4 minutes by
reconstructed timing runs.
Sky condition: Bright -- dusk. Sun barely below horizon, slightly
to observer's left.
Object color: Dark navy gray; pulsating orange-brown glow in
approximately 1/3 of center area.
Object sound: None.
Object appearance: Dark. Sharply outlined. Solid.
Object shape: Diamond (rhombus, playing-card orientation). Witness
sketch (Q. 17) shows diamond with concentric "stepped" lines on
surface converging toward center, labeled "These lines appeared
to be stepped up - in toward the center." Pulsating orange-brown
glow indicated in center. Note on sketch: "Bottom view -- looking
directly at bottom when overhead."
Object behaviors: Flash/flicker yes (center glow pulsed). All
other behavior questions answered No.
Object motion: Approached observer head-on from west, passed
directly overhead at constant speed and altitude, continued east.
No course changes, no altitude changes while in view.
Disappeared: Behind buildings as it moved east (~30 deg. elevation).
Edges: Sharply outlined. Solid.
No optical aids used.
Size: Approximately Piper Cub aircraft if "squared off."
Angular size (Q. 22): "At the distance observed, the match head
might possibly cover the object."
Distance estimate: Approx. 1,200 to 1,500 feet altitude.
Initial bearing: True North 275 deg., horizon 45 deg.
Final bearing: True North 100 deg., horizon 30 deg.
What observer was doing: Driving home from work. Stopped at
traffic light, saw object approaching from west, recognized
unfamiliar shape, stepped out of automobile for unobstructed
view. Traffic light changed to Go; cars behind him blowing horns;
no one else took time to look up.
Observer opinion (Q. 38): "I think that the object was exactly
what it appeared to be. A type of aircraft capable of moving
thru the air without the use of conventional wings, rotors,
vanes, propelling devices, or noise. Object moved smoothly
without noise or any signs of exhaust trail. I have not been
able to reconcile what I saw with any known object which would
give any similar likeness if put in the air."
Speed estimate: No -- "No known factors to estimate from."
Personal data: Age 44, Male. Duke University. Civilian pilot
(aircraft) 3 years. Navy pilot 6 years. Navy flight instructor.
Naval aerial gunnery school. Washington D.C. address.
Questionnaire completed: 30 January 1962. (Delayed due to travel.)
Reported to: O.D. at Bolling A.F.B. on 13 December 1961; then to
Major William T. Coleman, A.F., Secretary's Office, P.L.O.
Summary pages (signed 30 January 1962): Full narrative consistent
with above. Additional notes: no port holes or other openings
visible; orange-brown center glow pulsed "at rather a rapid
rate"; after the sighting witness revisited location to reconstruct
timing by moving hand across same flight path at estimated speed,
arriving at just about 1 min. in sight for each run. Explicit
conclusion: "I am convinced that the object I saw was as I have
described it and could not have been any conventional heavier, or
lighter than aircraft, any phenomenon caused by temperature
inversion mirage, or sun reflection."
Submitted sectional diagram: A cross-sectional engineering sketch
of the object, labeled "Sectional View." Depicts a stepped-
underside disc form with labeled components:
-- "Assumed top shape (may be flat planes)"
-- "Plenum" / "Power source" / "Adjustable louvers"
-- "Lift surfaces" / "Corners"
-- "Powered by hot air generated by fission"
-- Operational notes: (1) Louvers open on 4 sides -- hover or
rise depending on amount of hot air deflected to lift surfaces.
(2) Louvers open 2 adjacent sides -- move forward due to
temperature differential at opposing sides of ship.
-- Caveat: "The above sketch is based on the premise that the
underside of the ship was stepped in toward the center.
Relationship of height to length need not necessarily be in
proportion shown."
Unclassified Staff Message RJEZBL 3, AF IN 33958, 14 Dec 1961
Origin: 1100th Operations Group, Bolling AFB DC (3 pages)
Distribution: ADC Ent AFB CO; 26 Air Div Hancock Fld NY; ATIC
Wright-Patterson AFB OH; Asst Chief of Staff Intelligence HQ USAF;
Office of Information Services HQ USAF; HQ COMD USAF Bolling
AFB DC; COMDR 1100 ABWG Bolling AFB DC; and others.
UFO Reference AFR 200-2 Par 15:
Shape: Circular with four tips. Size: Approx 15 feet.
Color: Brown. Number: One.
Elevation (first): 30 deg. Elevation (last): 25 deg.
Flight path: Straight -- from Georgetown to Washington National Arpt.
Duration: 3 minutes.
Type: Ground visual. Radar: None. Photos: None.
Date/time: 13 DEC 1961, approx 2207Z.
Location: George Washington University DC.
Witness: Male, age 57, Washington DC. Sighting appears reliable.
Weather: Clear. Winds 330/14. Visibility unlimited.
Temp 30, dew point 12.
Track (Section J): From over Georgetown east over the river toward
Washington National Airport.
Unclassified Staff Message RJEZBL 4, AF IN 33984, 14 Dec 1961
Origin: 1100th Operations Group, Bolling AFB DC (3 pages)
Same distribution as RJEZBL 3.
UFO Reference AFR 200-2 Par 15:
Shape: Diamond. Size: Approx 20 ft. Color: Dark gray.
Number: One.
Feature: Definite shape and pulsating caseous flame.
Reason noticed: Motion of object and unusual shape.
Elevation (first): 45 deg azimuth 315 deg.
Elevation (last): 30 deg azimuth 135 deg.
Flight path: Straight and level. Disappeared behind bldg on skyline.
Duration: 3.5 to 4 minutes.
Type: Ground visual. Radar: None. Photos: None.
Date/time: 1705 EST (2205Z). Lighting: Dusk.
Location: F St. N.W. Washington DC.
Witness: Very reliable.
Weather: Clear. Winds 330/14. Visibility unlimited.
Temp 30, dew point 12.
Aerodrome officer assessment (Section K): "Sightings appear
reliable. Cause: unknown."
Witness contact list (1730, 13 December 1961): Three individuals
listed; all identifying information redacted.
Letter, J. Allen Hynek (Director) to Major William T. Coleman,
Office of the Secretary, U.S. Air Force, Pentagon, 28 Dec 1961.
Carbon copy: Major Robert J. Friend.
Subject: The "Diamond Case." Hynek spoke with the principals after
the sighting. From a rough check, parallax of the object was quite
large, suggesting it was flying quite low. One witness (the
experienced pilot) felt helicopter was ruled out since the object
was obviously low, showed no signs of vanes or props, no navigation
lights, and no noise. Witness's opinion: object was too low for
radar to pick up out of the city hash, and inbound pilots are too
focused on landing to look for anomalies. Hynek: "He is a flier of
some years experience and so perhaps this should be given some
weight, although I am in no position to judge this." Letter written
while Hynek was rushing a book manuscript through with his editor.
Washington D.C. and vicinity maps: 1961 Esso/Humble Oil pictorial
guide to Central Washington (several map pages, included in file).
================================================================
SEARCH INDEX TERMS
================================================================
Washington DC District of Columbia Georgetown December 1961 diamond
shape rhombus pulsating orange brown glow dark gray dark navy gray
civilian Navy pilot flight instructor naval aerial gunnery school
Duke University experienced observer qualified Bolling AFB Bolling
Air Force Base Pentagon George Washington University GWU Virginia
Avenue E Street NW UNIDENTIFIED unknown J Allen Hynek diamond case
triangulation failed no radar radar negative silent no navigation
lights no exhaust pulsating caseous flame multiple witnesses three
witnesses dusk early evening 1705 local 2205Z fission propulsion
sectional diagram engineering sketch Piper Cub size 1200 1500 feet
low altitude 1100th Operations Group RJEZBL reliable very reliable
clear sky unlimited visibility temp 30 winter 1961 Georgetown to
Washington National Airport flight path Potomac River William Coleman
Robert Friend urban sighting downtown
================================================================
CASE ANALYSIS -- Claude Sonnet 4.6
================================================================
THE OFFICIAL CONCLUSION
Project Blue Book left this case as UNIDENTIFIED. The record card
types "UNIDENTIFIED" in the Comments field, and the same word appears
on the Other line of the Conclusions box. This is not a bureaucratic
default. The file contains two separate military reports, two complete
witness questionnaires, a personal letter from J. Allen Hynek, and a
witness-drawn engineering diagram. This case was worked. The
UNIDENTIFIED designation reflects investigators who could not produce
an explanation they were willing to stand behind.
WHAT THE EVIDENCE SHOWS
At approximately 1705 local time (2205 Zulu) on the evening of
December 13, 1961 -- dusk in Washington D.C., with a cold clear sky
and unlimited visibility -- a dark diamond-shaped object moved in a
straight, level line from the Georgetown area eastward in the
direction of Washington National Airport. It was observed from at
least two independent ground positions by witnesses who had no
contact with each other prior to reporting.
The description is consistent across all accounts. Every observer
noted the diamond shape, the dark body, and the total absence of
sound. The primary witness -- a 44-year-old male who had been stopped
at a traffic light on E Street N.W. -- described the color as dark
navy gray with a pulsating orange-brown glow concentrated in
approximately the center third of the underside. He observed the
object approach head-on from the west, pass directly overhead, and
continue east, maintaining constant speed and altitude throughout.
He stepped out of his car for an unobstructed view. He saw no wings,
rotors, vanes, protrusions, navigation lights, vapor trail, or
exhaust. No sound was audible above traffic noise. Edges were sharp
against the cloudless sky.
The GWU witness, a 26-year-old male alerted by a campus security
guard, described the same form: a large four-sided diamond, dark
with a dull light at the bottom. He watched it for three minutes
before it disappeared behind buildings to the east.
Two separate Bolling AFB staff messages were filed the following
morning, each summarizing a different witness account. The first
(RJEZBL 3) covers a GWU-area observer described as age 57 -- a
third witness not fully captured by the FTD 164 questionnaires in
this file -- and characterizes the shape as "circular with four
tips." The second (RJEZBL 4) covers the Virginia Avenue witness and
describes "diamond, dark gray, pulsating caseous flame," assessed
as "very reliable" by the aerodrome officer. His bottom line:
"Sightings appear reliable. Cause: unknown."
Weather was ideal: clear sky, dry, winds from the northwest at 14
knots, temperature 30 degrees Fahrenheit, unlimited visibility. A
cold, still December evening with nothing in the atmosphere to cause
reflections or optical distortions.
POINTS OF INTEREST
1. The primary witness is among the most credentialed civilian
observers in the Blue Book archive. A Navy pilot for six years, a
civilian pilot for three additional years, a Navy flight instructor,
and a naval aerial gunnery school graduate brings a level of visual
acuity training and aerial experience that is rarely found in civilian
sighting reports. He knew what aircraft look like from directly below.
He made explicitly professional judgments: no vanes, no rotors, no
props, no navigation lights, no noise, no exhaust. His final
statement -- "I have not been able to reconcile what I saw with any
known object" -- is not the statement of someone struggling to
identify an unfamiliar phenomenon. It is the statement of someone who
knew exactly what to look for and found none of it. He additionally
ruled out temperature inversion mirage and sun reflection by name,
two explanations he would have been familiar with through his flight
experience.
2. The witness submitted an engineering diagram. After filing his
FTD 164 questionnaire, this man drew a cross-sectional view of the
object proposing a propulsion mechanism: a stepped-underside disc
using fission-generated hot air with adjustable louvers on four sides
for lift, hover, and directional control. Whether or not the proposed
mechanism is technically viable, the act of producing it is
remarkable. He was doing engineering analysis on his own sighting --
trying to find a rational mechanism for what he observed. He noted
explicitly that the diagram was a hypothesis based on visual evidence,
not a definitive claim. This behavior is not consistent with someone
who misidentified a balloon, a reflection, or a conventional aircraft.
3. J. Allen Hynek personally followed up. The Project Blue Book
scientific consultant contacted the primary witness, spoke with him,
and wrote a substantive letter to Major William T. Coleman at the
Secretary of the Air Force's office within two weeks of the sighting.
He gave this case its own name: the Diamond Case. He took the
witness's ruling-out of helicopter seriously as informed professional
judgment. He agreed the object was probably below useful radar
coverage, noting city ground clutter would have masked it and inbound
pilots at National Airport would not have been looking for it. What
Hynek does not do in his letter is offer an explanation. He leaves
the cause open. For a man as experienced at providing conventional
explanations for difficult cases as Hynek was in 1961, that silence
is its own data point.
4. The failed triangulation is informative rather than dismissive.
The record card notes "No success at triangulation. Plots different."
But both primary witnesses were in the Foggy Bottom/GWU corridor of
northwestern Washington D.C. -- probably less than a mile apart.
With that small a baseline, even small errors in angular estimation
produce large errors in calculated position. The "plots different"
result does not indicate the witnesses saw different objects. It
indicates the triangulation geometry was poor for two observers that
close together. The witnesses' individual distance estimates -- 1,200
to 1,500 feet from the pilot, and 1/2 to 3/4 mile from the GWU
observer -- are not far from compatible when considered together
with the angular positions each reported. Hynek noted the parallax
data suggested the object was flying quite low, consistent with the
pilot's 1,200-1,500 foot estimate.
5. The object's track is geographically precise. The Bolling AFB
message (Section J) and the witness bearing data both point to a
straight, level flight from the Georgetown area eastward toward
Washington National Airport, roughly following the Potomac corridor.
This corridor runs past Bolling AFB on the east bank of the Anacostia
and directly over the southwestern portion of the city. In 1961 this
was a densely sensitive area of airspace. Experimental aircraft
development was active in that era, and classified programs existed
that were not publicly acknowledged. That said, the specific
combination of total silence, no navigation lights, no visible
propulsion, and an unusual angular shape is difficult to accommodate
even within the experimental programs of that period. A silent,
propulsion-invisible diamond approximately 20 feet across flying at
1,200-1,500 feet is not consistent with any aircraft publicly known
from 1961.
6. The "circular with four tips" shape in RJEZBL 3 versus "diamond"
in RJEZBL 4 is not a contradiction. A diamond seen from a slightly
oblique angle rather than from directly below would naturally read as
a rounded form with four pointed corners -- exactly what "circular
with four tips" describes. The two military reports are the same
shape described from observers at different positions relative to
the object's flight path.
BOTTOM LINE
The UNIDENTIFIED designation for this case is fully earned -- not a
classification assigned by default for thin documentation, but a
considered conclusion after serious investigation. This file is one
of the richer ones in the archive: multiple witnesses, two official
military reports filed the next morning, two complete questionnaires,
Hynek's personal involvement, and a primary observer with genuine
aviation credentials who pursued the question even after filing his
report.
What stays with you is the image of a 44-year-old Navy flight
instructor standing on E Street N.W. in December, watching something
pass directly overhead that he could not explain -- and then going
back to the same spot, again and again, to try to understand what he
had seen. He returned with his hand raised, tracing the object's
path in the air, timing the traverse, working the numbers. He drew
a diagram. He delayed sending his report because he was out of town
and wanted to do it right. He did not claim to have seen a spacecraft.
He said he saw something he could not reconcile with any aircraft he
knew, and he meant it.
Whatever crossed the sky over downtown Washington at dusk on December
13, 1961, it left a serious and well-qualified man genuinely unable
to explain it. That matters.
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END OF DOCUMENT
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