Military Report
Unclassified Complete
Southeast Asia Triangles
National Archives and Records Administration
Confidence
90%
Credibility
85%
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Intelligence summary
The 'Southeast Asia Triangles' case from 2017 was assessed by the AARO and concluded that the observed triangular objects were actually static fishing nets, not anomalous objects posing a risk to navigation.
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Jun 15, 2023
Document Date (year hint)
Document Date (year hint) for Southeast Asia Triangles
Jun 14, 2026
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Ingestion Date for Southeast Asia Triangles
Jun 14, 2026
Document Record Date
Document Record Date for Southeast Asia Triangles
Jun 14, 2026
Update Date
Update Date for Southeast Asia Triangles
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Full document text
2,374 characters, transcribed via OCR. Errors reflect the source scan. Compare with the original ↗
UNCLASSIFIED
All-domain Anomaly Resolution Office
US Department of Defense
Case: "Southeast Asia Triangles"
Case Resolution I 17 March 2023
(U) Key Findings
(U) AARO assesses that the subjects of the
"Southeast Asia Triangles" case from 2017 almost
certainly are cone-shaped static fishing nets
floating on the surface of the ocean. This
conclusion is based on a thorough review of the
evidence by AARO's Intelligence and Science and
Technology (S&T) Partners.
• (U) The image was originally flagged as
containing potentially anomalous objects and
posing a risk to navigation. Additional imagery
of the area from 2017 was discovered and
collected.
• (U) Both the Intelligence and S&T teams
compared the size, shape, and location of the
initial image to existing and subsequent images
in the same region, and compared it to libraries
of known morphologies.
(U) Intelligence Assessment
(U) AARO's Intelligence partners examined the
image and compared it other imagery.
(U) Case Essentials
(U)Six triangular objects in a
formation were originally flagged as
potentially anomalous and potentially
posing a risk to navigation
(U) Location: Southeast Asia
(U) Date: 30 August 2017
(U) Altitude: N/ A
(U) Shape: Six dark triangles
(U) Reporter: An Intelligence
Community Member
(U) Sensor: Satellite imagery
(U) Behavior: Noted as possible risk
to navigation
(U) Case Status: Resolved; Objects
are fishing nets on the ocean surface
Specifically, they located a clearer image in the vicinity of the objects in question.
• (U) The images from 2017 display several triangles and were confirmed to be static, cone-shaped
fishing nets.
• (U) These triangular fishing nets were compared to the black triangles from the 2017 imagery and it
was confirmed that are all are approximately the same size of about 11 m x 7m.
1
UNCLASSIFIED
All-Domain Anomaly Resolution Office
Chief of Staff, AARO
Authority: FY24 NDAA, now codified at 44 U.S.C. 2107
Date: 2/6/2025
Released in Full: X
Case Number: 330UAP000019
Page determined
to be Unclassified
Reviewed by Chief of Staff, AARO
IAW FY24 NDAA, Section 1841(a)(1)(C)
Date: 2/6/2025
019
Page determined to be Unclassified
Reviewed by Chief of Staff, AARO
IAW FY24 NDAA, Section 1841(a)(1)(C)
Date: 2/6/2025
019
Page determined to be Unclassified
Reviewed by Chief of Staff, AARO
I
AW FY24 NDAA, Section 1841(a)(1)(C)
Date: 2/6/2025
019