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Within Dover Triangles

How Strong Is Dover's 2007 Triangle Case?

A lone witness reported a silent triangle near Dover Air Force Base, but the case lacks photographs, radar data and independent corroboration.

28 sources 3 graphics

On this page

  • What the witness reported near the air base
  • Which evidence is missing from the public record
  • Why distance, darkness and aircraft traffic matter
Preview for How Strong Is Dover's 2007 Triangle Case?

Introduction

The January 2007 Dover triangle report is one of the most frequently cited UFO claims connected to Dover Air Force Base. According to a report submitted to the National UFO Reporting Center (NUFORC), a witness described a silent triangular object hovering over a field less than a mile from the base on the night of 23 January 2007. The account stands out because it explicitly links a reported triangular craft to one of Delaware’s most important military installations. Yet it is also a useful example of how quickly a dramatic sighting can run into evidential limits.

2007 Claim illustration 1

More than a decade later, the case remains unresolved rather than confirmed. The report contains a clear narrative from a witness, but there are no photographs, radar records, air-traffic data, military statements or independent observers in the public record. As a result, the 2007 claim occupies an unusual place in Delaware UFO history: memorable enough to be repeatedly referenced, but too thinly documented to support strong conclusions.[NUFORC]nuforc.orgNUFORC UFO Sighting 55023August 20, 2023 — 1 Feb 2007 — Location: Dover, DE, USA Shape: Triangle triangular craft hovering over a f…Published: August 20, 2023

What the Witness Reported Near the Air Base

The sighting was reported to NUFORC on 29 January 2007 and was said to have occurred at about 10:30 p.m. on 23 January. The witness described a triangular object with lights that appeared to hover silently over a field near Dover Air Force Base for approximately five minutes. The report listed a single observer and characterised the object simply as a triangle with lights.[NUFORC]nuforc.orgNUFORC UFO Sighting 55023August 20, 2023 — 1 Feb 2007 — Location: Dover, DE, USA Shape: Triangle triangular craft hovering over a f…Published: August 20, 2023

Several aspects of the account help explain why it attracted attention:

  • The reported location was close to Dover Air Force Base.
  • The object was described as triangular, a shape commonly associated with later “black triangle” UFO reports.
  • The witness emphasised silence rather than engine noise.
  • The object was said to hover rather than pass quickly through the sky.[NUFORC]nuforc.orgNUFORC UFO Sighting 55023August 20, 2023 — 1 Feb 2007 — Location: Dover, DE, USA Shape: Triangle triangular craft hovering over a f…Published: August 20, 2023

Within the broader history of Dover-area sightings, this is one of the clearest reports linking a triangular object directly to the vicinity of the base. Many other Delaware sightings involve distant lights, brief observations or uncertain shapes. Here, the witness believed enough detail was visible to identify a distinct triangular form.[NUFORC]nuforc.orgNUFORC UFO Sighting 55023August 20, 2023 — 1 Feb 2007 — Location: Dover, DE, USA Shape: Triangle triangular craft hovering over a f…Published: August 20, 2023

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Which Evidence Is Missing From the Public Record

The central weakness of the 2007 case is not that the witness necessarily misreported what was seen. Rather, it is that almost every form of independent evidence is absent.

No publicly available material associated with the report includes:

  • Photographs or video recordings.
  • Radar tracks.
  • Air-traffic control records.
  • Military incident reports.
  • Statements from additional witnesses.
  • Precise measurements of altitude, distance or direction.[NUFORC]nuforc.orgNUFORC UFO Sighting 55023August 20, 2023 — 1 Feb 2007 — Location: Dover, DE, USA Shape: Triangle triangular craft hovering over a f…Published: August 20, 2023

This matters because human observers often struggle to judge the size, speed and distance of lights seen at night. Even an honest witness can misinterpret a scene when there are few visual reference points. Without supporting data, investigators cannot determine whether the object was nearby and small, distant and large, hovering, or merely appearing stationary because of viewing geometry. The absence of corroboration leaves the sighting dependent almost entirely on one person’s interpretation.[NUFORC]nuforc.orgNUFORC UFO Sighting 55023August 20, 2023 — 1 Feb 2007 — Location: Dover, DE, USA Shape: Triangle triangular craft hovering over a f…Published: August 20, 2023

The case therefore differs from stronger UFO incidents that involve multiple observers, instrumented detections, official investigations or contemporaneous documentation. In evidential terms, it remains a single-source report.

2007 Claim illustration 2

Why Distance, Darkness and Aircraft Traffic Matter

The most important sceptical consideration is the location itself. Dover Air Force Base is a major military airlift installation that routinely hosts large aircraft operations. Aircraft approaching or departing at night can display lighting arrangements that look unusual from the ground, particularly when viewed from an angle that hides normal motion cues.[Dover Air Force Base]dover.af.milDover Air Force BaseDover AFB homeDover AFB is home to the 436th Airlift Wing. Air Force Base, Delaware, completed Dover reservists. Dove…

A well-known aviation illusion occurs when an aircraft is flying toward an observer. Because the motion is largely along the viewer’s line of sight, the aircraft can appear almost stationary even while moving at considerable speed. Bright landing lights may then seem to hover in place. As the aircraft changes heading or altitude, observers can suddenly perceive movement that had not been obvious moments before.

Darkness also removes many of the visual references people use to estimate distance. A set of lights over a field can appear much closer than it actually is. If the underlying structure of an aircraft is difficult to see, separated lights may be interpreted as marking the corners of a triangular craft.

None of these explanations can be proven from the available evidence, but they are important because the reported location sits within an environment where military and civilian aircraft activity is common.[Dover Air Force Base]dover.af.milDover Air Force BaseDover AFB homeDover AFB is home to the 436th Airlift Wing. Air Force Base, Delaware, completed Dover reservists. Dove…

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Did Later Reporting Strengthen the Case?

No significant new evidence appears to have emerged after the original report. Later discussions of the incident generally trace back to the same NUFORC entry rather than to newly discovered witnesses, photographs or official records. The core facts remain essentially unchanged from the original submission: one observer, one report and a brief description of a hovering triangular object near the base.[NUFORC]nuforc.orgNUFORC UFO Sighting 55023August 20, 2023 — 1 Feb 2007 — Location: Dover, DE, USA Shape: Triangle triangular craft hovering over a f…Published: August 20, 2023

This is an important distinction. Some UFO cases gain credibility over time because additional witnesses come forward, records are released or independent investigators uncover supporting information. The Dover triangle claim has not followed that path. Its status today is largely the same as it was in early 2007.

That does not automatically make the sighting mistaken. It simply means that the evidential picture has not improved. The claim has survived as a story, but not as a substantially documented case.

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How Strong Is the 2007 Triangle Case?

As a piece of Delaware UFO history, the 2007 Dover report is noteworthy because it provides one of the clearest alleged links between a triangular craft and Dover Air Force Base. The witness offered a straightforward description, reported the event within days and identified specific characteristics that have appeared in other triangle reports.[NUFORC]nuforc.orgNUFORC UFO Sighting 55023August 20, 2023 — 1 Feb 2007 — Location: Dover, DE, USA Shape: Triangle triangular craft hovering over a f…Published: August 20, 2023

However, when judged strictly by evidence, the case is weak to moderate at best. Its strengths are the prompt reporting and the relatively specific description. Its weaknesses are more substantial:

  • Only one witness is publicly documented.
  • No photographs or video are known.
  • No radar or sensor data are available.
  • No official investigation is publicly documented.
  • No later corroboration appears to have surfaced.[NUFORC]nuforc.orgNUFORC UFO Sighting 55023August 20, 2023 — 1 Feb 2007 — Location: Dover, DE, USA Shape: Triangle triangular craft hovering over a f…Published: August 20, 2023

For that reason, the 2007 Dover hovering triangle claim is best viewed as an unresolved sighting rather than a persuasive demonstration of an unknown craft. It remains interesting because of its proximity to Dover Air Force Base and because it fits a recurring pattern of triangle reports in the region. Yet the lack of supporting evidence prevents it from ranking among the stronger or better-documented UFO cases associated with Delaware.[NUFORC]nuforc.orgNUFORC UFO Sighting 55023August 20, 2023 — 1 Feb 2007 — Location: Dover, DE, USA Shape: Triangle triangular craft hovering over a f…Published: August 20, 2023

2007 Claim illustration 3

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Endnotes

1. Source: nuforc.org
Link:https://nuforc.org/sighting/?id=55023

Source snippet

NUFORC UFO Sighting 55023August 20, 2023 — 1 Feb 2007 — Location: Dover, DE, USA Shape: Triangle triangular craft hovering over a f...

Published: August 20, 2023

2. Source: nuforc.org
Link:https://nuforc.org/sighting/?id=55972

Source snippet

NUFORC UFO Sighting 55972NUFORC UFO Sighting 55972. Occurred: 2007-03-25 15:10 Local Reported: 2007-03-27 21:34 Pacific Duration: 20 minu...

Published: March 25, 2007

3. Source: history.com
Title: black triangle ufos facts
Link:https://www.history.com/articles/black-triangle-ufos-facts

4. Source: dover.af.mil
Link:https://www.dover.af.mil/

Source snippet

Dover Air Force BaseDover AFB homeDover AFB is home to the 436th Airlift Wing. Air Force Base, Delaware, completed Dover reservists. Dove...

Additional References

5. Source: facebook.com
Link:https://www.facebook.com/groups/SpaceLaunchSchedule/posts/1646638546376596/

Source snippet

UFO spotted flying low and loudSpotted 2 drones near Pelican Point Condos. Flying low too..maybe 100ft.. Looked like a Mini pro..very loud...

6. Source: facebook.com
Link:https://www.facebook.com/groups/coloradoaviationphotography/posts/10161034598631051/

Source snippet

"Came out of Dover AFB in Delaware. I heard it above COS area and it had that sound of older but larger prop plane. [https://globe.ad..."](https://globe.ad...")...

7. Source: facebook.com
Title: But why? A new episode of #UFOWitness drops on discovery+
Link:https://www.facebook.com/TravelChannel/posts/there-is-no-doubt-black-triangle-ufos-have-been-appearing-in-our-skies-with-incr/10160335410328851/

Source snippet

There is no doubt, black triangle UFOs have been...There is no doubt, black triangle UFOs have been appearing in our skies with increasi...

8. Source: reddit.com
Link:https://www.reddit.com/r/HighStrangeness/comments/yykok6/calling_all_people_who_have_witnessed_a_black/

Source snippet

Had small white flat rectangle lights on each corner, and...Read more...

9. Source: youtube.com
Link:https://www.youtube.com/watch?v=nh_YRWtTXzg

Source snippet

Defense Department releases new UFO files of sightings in Northeast...

10. Source: arxiv.org
Link:https://arxiv.org/abs/2305.18566

11. Source: youtube.com
Title: Defense Department releases new UFO files of sightings in Northeast
Link:https://www.youtube.com/watch?v=sgxpeNDsmAQ

Source snippet

Has the US been flying black triangle UFOs since DESERT STORM?...

12. Source: youtube.com
Title: Possible UFO sighting over U.S. military base
Link:https://www.youtube.com/watch?v=WlgD0yuGGdc

Source snippet

US military stumped by UFO sightings over bases: Ex-defense official | Elizabeth Vargas Reports...

13. Source: cia.gov
Link:https://www.cia.gov/readingroom/document/cia-rdp81r00560r000100010001-0

14. Source: youtube.com
Title: The Proof Is Out There: UFO SPOTTED ON U.S. MILITARY BASE (Season 2)
Link:https://www.youtube.com/watch?v=rB6OQV2gD-E

Source snippet

Possible UFO sighting over U.S. military base...