🔥 Trending Valiant Shield Exercise: LPD-10 Torpedo Strike Incident

During the Valiant Shield 2026 exercise, the decommissioned U.S. Navy Austin-class amphibious transport dock ship USS Juneau (LPD-10) was intentionally sunk in the Philippine Sea as part of a live-fire sinking exercise (SINKEX) ¹²⁵⁶.

This event occurred on June 29, 2026, when the USS Juneau was sent to the ocean floor by U.S. and partner nations' forces ². A Japanese torpedo was specifically noted as having contributed to the sinking ¹⁵⁷.

Context of Valiant Shield 2026

Valiant Shield is a biennial, multilateral field training exercise conducted by the U.S. and partner nations in the Western Pacific ⁶. The 2026 iteration of the exercise is taking place from June 22 to July 1, involving U.S. Pacific Command joint forces and international allies ⁴⁹. The primary focus of Valiant Shield is joint, cross-combatant integration and demonstrating the capabilities of a joint force ⁶.

Purpose of the Sinking Exercise (SINKEX)

SINKEX operations like the one involving USS Juneau are conducted to provide realistic training for naval forces in a live-fire environment ⁶. They allow participating nations to test their weapons systems and tactics against a real target, which is typically a decommissioned vessel.

Before the sinking, the U.S. military confirmed that the USS Juneau was thoroughly cleaned of hazardous materials, and all operations were conducted in compliance with environmental regulations ³. The U.S. Navy plans to sink several other decommissioned vessels, including amphibious ships, cruisers, and frigates, in upcoming exercises such as RIMPAC 2026, Valiant Shield, and Atlantic Thunder, for weapons evaluation and training purposes ¹⁰.