# Former U.S. Amphib Sunk in Pacific Maritime Strike Drills

> **Open Intelligence Dossier** · First detected: 2026-06-30 09:07 UTC · Category: World

## Executive Summary
Valiant Shield 2026 exercises in the Pacific feature high-profile sinking drills and integrated missile defense testing.

## Intelligence Brief
Multilateral forces conducted a sinking exercise in the Pacific, resulting in the destruction of a former U.S. amphibious vessel. The operation involved international partners, with reports confirming the ship was sent to the ocean floor by a Japanese torpedo.


Coverage from USNI News, Yahoo, and DVIDS highlights the sinking drill as a primary component of the Valiant Shield 2026 exercise. Additionally, outlets including Naval News and DefenseScoop report on broader technological integrations, specifically the unification of the Guam missile defense network by Lockheed Skunk Works and the deployment of the MRIC surface-to-air defense system by III MEF.


Ongoing activity remains centered on Valiant Shield 2026. Official reports from cpf.navy.mil indicate that the USS George Washington continues to conduct flight operations in the Philippine Sea, while observers monitor further developments regarding missile defense network performance.

## Multi-Source Evidence Table
| Source Outlet | Headline | Verification URL |
|---|---|---|
| cpf.navy.mil | USS George Washington conducts flight ops in Philippine Sea during Valiant Shield 2026 | [Source Link](https://news.google.com/rss/articles/CBMiakFVX3lxTFAwYjQweFkzZFBabUZPX05kU19MRmkwODFsWWVoYjM4OGJabnpmZDFLcFJERHBBZW0wSlBxQWJ3Z0VITHFlWHVqdVJPX3ljS0NwVW5NWGVsY0NGdlVzblB3VFU3dkJsU3JYMWc?oc=5) |
| Yahoo | Japanese torpedo sends US ship to the ocean floor during Valiant Shield exercise | [Source Link](https://news.google.com/rss/articles/CBMikAFBVV95cUxQT21Oem8tVG84aEtqdjU5VjZtR1ljaTlzTEEzU1laTEtWaHQ3dnlBMVRET1Qtdjg0Vk9FRDRDUWlaMENEMkxSOEp2NTUxcHdKdjlERDJJdU5UQnF4Y2xxbHFiSUdPQUlucE1rUzMtQmFWYXRtTjlnWFNMTzUyVm83bURaVmFUdU9USktNaFdWN0s?oc=5) |
| navalnews.com | Lockheed Skunk Works C2 Unifies Guam Missile Defense Network | [Source Link](https://news.google.com/rss/articles/CBMivgFBVV95cUxOakM1Ry0zQkt1TS1oVWU2Y2tJYkp6VW1xYWNIcEZ5aXVkRGUtME9JUVdQSE1FT2tmNm5YNThtNmhxRkM4emEyTzNDbHJBd1JMZzZfcm1ZazkybE1lcnZka1JtUE55UExGamRuR2NIVDctb204dEl6ajB6WGMta21fcWpfQXZyb0t0QUFkQTFpcmZTOTFlcDV5Mk1IeGRxNkZzVTVVR201TVh2TTRwWThrRmdkZGdyUGNtMmJNTkJn?oc=5) |
| DefenseScoop | III MEF integrates MRIC surface-to-air defense system during Pacific exercise | [Source Link](https://news.google.com/rss/articles/CBMioAFBVV95cUxQdDVIR0pXOUxBczE0d0R3SXdJMmc4THpHaTFMdXNkMldFVmtQYkFjeGFIWUVGeExlR1hrQkxtaWtGampialR2RUdOcmpjUk9mZERMZlJqUy1POG0wV280Q3lPNzFaZGh2RFRiWGRheXh4eHoybFFwWlNfOVJfSWR1V181Y2NSYnUyUXJ6N0hxajRnNlAxZVZybHMtSHpIa0M3?oc=5) |
| DVIDS | Multilateral, Joint Forces execute sinking exercise during Valiant Shield 2026 [Image 8 of 11] | [Source Link](https://news.google.com/rss/articles/CBMitwFBVV95cUxNUGVyZ1dfdGFsSzBOaURJNE1HUlY4cE40dzlYOFhlNFdLSzBfaHhWRTYwa3lGZHNnTkxXSVlHSDBsS0EySG1QSUltc0tVTXhUc0h2YVA3N3Y5TWlzZjhyTjVpcWg3eVMyamcxYWZMTU1mUmhLNjVTZWJBbERkRUxveUt3c0J4aEtoUkowaU5YS0hhbko5NUdrYnBXaHM3OFY3RkYxY24yNVNLUnMxRjgyRjllNGlfS1k?oc=5) |
| USNI News | Former U.S. Amphib Sunk in Pacific Maritime Strike Drills | [Source Link](https://news.google.com/rss/articles/CBMikwFBVV95cUxOb0JSQ3NfeVE4OXlCek1pc0dvckhXX3V0Z3hEOGlsLUNFc0hhVlNtUm15d1FzRGtFUDZyYXV2YWc0M29FQVJkemZSYUF0WU8xbER3SE1XWEhMdVFPVEZidGR6U201V25KM2VTcFc2OGJrT0R0N2hEb2c2UlRoaGN5YWUyUTJpczNZN0Y0eG1CaVF3dUk?oc=5) |

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*Canonical Source: https://pulse.byoviral.com/trend/2026-06-30/former-u-s-amphib-sunk-in-pacific-maritime-strike-drills*