Southeast Asia Triangles

UNCLASSIFIED 019

All-domain Anomaly Resolution Office US Department of Defense

Case: "Southeast Asia Triangles" Case Resolution | 17 March 2023 CLEARED For Open Publication Oct 04, 2023 Department of Defense OFFICE OF PREPUBLICATION AND SECURITY REVIEW

(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) 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

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All-Domain Anomaly Resolution Office Chief of Staff, AARO Authorizing Official for NDAA, now codified at 44 U.S.C. 2107 Date: 2/6/2025 Released in Full X Case Number: 330U/AP00019 Page determined to be Unclassified Reviewed by Chief of Staff, AARO IAW FY24 NDAA, Section 1841(a)(1)(C) Date: 2/6/2025