October 1971 — A 300-foot black triangular craft passes silently over Dennis Horne's neighborhood in Florence, South Carolina, at approximately 500 feet altitude, its dimly lit underside showing evenly spaced colored lights. Four fighter jets, likely from Shaw Air Force Base, followed on the same heading moments later.
THINK ABOUTIT UFO|UAP SIGHTING REPORT
1971: Large triangle flies low over Florence, South Carolina
In the fall of 1971, Dennis Horne walked into his backyard in Florence, South Carolina, looked up, and saw the largest object he had ever seen in the sky — a perfectly silent, jet-black triangular craft approximately 300 feet from wingtip to wingtip, passing directly overhead at roughly 500 feet altitude, moving so slowly that it seemed impossible it could remain airborne. Dimly lit colored lights — yellow, blue, orange, red — lined the underside from tip to tip. It bore no markings, produced no sound, and showed no evidence of propulsion. Moments after it disappeared to the east, four fighter jets came screaming over on the same heading, their engine roar a stark contrast to the absolute silence of the object they were chasing.
Horne’s 1971 sighting is remarkable not only for its clarity and proximity but for its temporal position: a large black triangle observed more than two decades before the Belgian wave of 1989–1990 and 26 years before the Phoenix Lights of 1997 — events it closely resembles in both object description and flight characteristics. Shaw Air Force Base, 40 miles to the west, provides the most likely origin for the pursuing fighter jets.
Date: October 1971 (exact date not specified)
Sighting Time: Approximately 6:00 p.m.
Day/Night: Dusk
Location: Florence, South Carolina — residential neighborhood
Urban or Rural: Urban — residential area within the city of Florence
No. of Entity(‘s): None observed
Entity Type: Not Applicable
Entity Description: Not Applicable
Hynek Classification: CE-I (Close Encounter of the First Kind) — Object observed directly overhead at approximately 500 feet with detailed structural resolution. Reclassified from NL; see Researcher’s Notes.
Duration: Approximately 10 minutes
No. of Object(s): 1 (followed by 4 conventional fighter jets)
Description of Object(s): Very large, flat, black triangular craft; dimly lit colored lights (yellow, blue, orange, red) evenly spaced along the underside from wingtip to wingtip; no markings, no visible engine, no exhaust; completely silent
Shape of Object(s): Triangle — approximately twice as wide (tip to tip) as deep (front tip to rear edge)
Size of Object(s): Approximately 300 feet across from wingtip to wingtip; approximately 150 feet from front tip to rear; at arm’s length, the wingtip span subtended approximately 2.5 feet
Color of Object(s): Black (body); dimly lit colored lights on underside — yellow, blue, orange, red
Distance to Object(s): Approximately 500 feet (directly overhead)
Height & Speed: Approximately 500 feet altitude; speed estimated at 30–40 mph — described as impossibly slow for its size; silent
Number of Witnesses: 1 (Dennis Horne; parents were present in the home but chose not to report)
Special Features/Characteristics: Completely silent; impossibly slow speed for size; no visible propulsion system; followed immediately by four conventional fighter jets (likely from Shaw AFB, 40 miles west); pre-dates the “black triangle” wave of the late 1980s–1990s by two decades
Case Status: Unexplained
Source: UFOEvidence.org (named witness: Dennis Horne, Florence, SC)
Summary/Description: Dennis Horne observed a massive, silent, black triangular craft pass directly overhead at approximately 500 feet altitude over his residential neighborhood in Florence, South Carolina, at dusk in October 1971. The craft was approximately 300 feet across, displayed dimly lit colored lights on its underside, moved at an estimated 30–40 mph, and produced no sound or visible exhaust. Immediately after the object passed from view to the east, four fighter jets followed on the same heading at high speed. Horne did not report the sighting due to his parents’ concerns about ridicule.
Related Cases: 1970 Florence, SC — Disc Over TV Tower | 1980 Easley, SC — Garrett Daylight Disc
Detailed Report
Dennis Horne was a resident of Florence, South Carolina, living in a residential neighborhood within the city. Shaw Air Force Base, a Tactical Air Command installation, was located approximately 40 miles to the west near Sumter.
On an evening in October 1971, at approximately 6:00 p.m. during dusk, Horne stepped into his backyard. His attention was immediately drawn to something dark overhead. Looking up, he found himself directly beneath what he described as the largest object he had ever seen in the sky.
The craft was triangular, jet-black, and moving slowly from west to east at an altitude he estimated at approximately 500 feet. It was approximately 300 feet across from wingtip to wingtip and about half that distance from the forward tip to the rear edge. Horne provided an angular-size comparison: with his arms extended straight overhead, the wingtip span would have subtended approximately 2.5 feet — consistent with his distance and size estimates.
The underside displayed a row of dimly lit colored lights — yellow, blue, orange, and red — evenly spaced from one wingtip to the other. Horne could not recall the specific color sequence but noted they were dim rather than brilliant. He observed no markings of any kind, no additional lights beyond the underside row, no visual indication of an engine or propulsion system, and no exhaust.
The craft was completely silent. Horne specifically noted the absence of any sound, which he found particularly striking given the object’s enormous size. It was also moving extremely slowly — he estimated 30 to 40 mph, a speed he considered physically impossible for an object of that mass and size to sustain in flight.
Horne watched the object until it traveled out of his line of sight to the east. Immediately after it disappeared, four fighter jets came screaming overhead on the same flight path, their engine noise in stark contrast to the triangle’s silence. Horne assumed they originated from Shaw Air Force Base.
Horne told his parents about the sighting, but they advised against reporting it, citing the social consequences of being known as a family that reported UFOs. The sighting went unreported to any official body. Horne noted that he was confused at the time because his understanding of UFOs was limited to saucer and cigar shapes — he had never heard of triangular craft. It was not until the 1990s, when reports of black triangles became more common, and particularly after the 1997 Phoenix Lights event, that he recognized a strong similarity to what he had observed in 1971.
Horne eventually submitted his account to UFOEvidence.org, providing his full name, location, and approximate age at the time of submission (50 years old). The report is written in clear, detailed prose and includes no claims beyond what was directly observed.
Researcher’s Notes
The Florence Triangle — South Carolina 1971 and the Pre-Wave Black Triangle Problem
- Classification Correction — CE-I, Not NL: The existing page classified this case as NL (Nocturnal Light), which does not accurately represent the reported observation. The witness described a structured craft with defined geometry (triangular), surface features (underside lights in specific colors), size estimation against known angular references, and absence of visible propulsion — all observed at approximately 500 feet directly overhead. This level of structural resolution at this distance meets the CE-I threshold under Hynek’s taxonomy. The dusk lighting conditions and the object’s black coloration against a darkening sky make this a borderline temporal case, but the observation of distinct shape and surface detail decisively favors CE-I over NL.
- Source Assessment — Named Witness, No Corroboration: Dennis Horne provides his full name, location, and age, elevating this account significantly above anonymous submissions to the same database. His narrative is restrained, internally consistent, and includes the kind of specific observational detail — angular subtension estimate, color enumeration, speed assessment, comparison to later events — that characterizes sincere testimony. However, the account is single-witness with no independent corroboration. His parents, the only potential secondary witnesses, did not observe the object and chose not to report. No contemporaneous media coverage from Florence has been located. The fighter-jet pursuit, if it occurred, would potentially be traceable through Shaw AFB flight records, but no such records have been sought or produced.
- Temporal Significance — Pre-Wave Black Triangle: The most analytically interesting dimension of this sighting is its date. Horne’s 1971 observation predates the commonly recognized emergence of black triangle reports by nearly two decades. The Belgian wave of 1989–1990, which produced hundreds of reports of large, silent, triangular craft with colored underside lights, is generally treated as the beginning of the “black triangle” era in UFO documentation. The 1997 Phoenix Lights event — which Horne himself recognized as strongly similar to his experience — further cemented the type. If Horne’s 1971 account is accurate, it demonstrates that the black triangle form was present over the American Southeast well before the wave period, raising questions about how long such objects have been operating and whether the late-1980s “emergence” was actually a recognition threshold rather than a genuine onset.
- Military Response — The Fighter Pursuit: The immediate appearance of four fighter jets on the same heading after the triangle’s passage is a significant detail. Shaw Air Force Base, located approximately 40 miles west of Florence, was a Tactical Air Command installation in 1971 — meaning it housed combat-ready fighter aircraft on alert status. The scrambling of four jets in formation pursuit of an unidentified object over a populated area would represent a significant military response. If accurate, this detail suggests that the triangle was tracked by military radar or reported through other channels, triggering an intercept. The fact that the jets followed the object’s path rather than arriving from a random direction implies coordinated vectoring, not coincidental overflight.
Dennis Horne’s 1971 sighting is a quietly important case — not for its drama, which is understated, but for what it implies about the timeline of the black triangle phenomenon. A named witness with a clear, restrained account, observing a 300-foot silent triangle at 500 feet overhead, followed by military jets, in a decade when triangular craft were essentially unknown in the UFO literature. It asks a question the archive cannot yet answer: how long has this been going on?
