Defcon Alerts Threat Monitor

Defcon Alerts Threat Monitor

Space/Nuclear

U.S. Navy Conducts Successful Trident II D5LE Missile Test Launches Off Florida Coast

Missile tests were not conducted in response to any ongoing world events.

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Donald Standeford
Sep 23, 2025
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ATLANTIC OCEAN — U.S. Navy Strategic Systems Programs conducted four scheduled missile test flights of unarmed Trident II D5LE missiles from an Ohio-class ballistic missile submarine off the east coast of Florida from September 17-21.

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One launch test event on Sunday evening lit up the night sky and was visible from Puerto Rico. Flight tests are conducted on a recurring, scheduled basis to evaluate and ensure the continued reliability and accuracy of the system. Missile tests were not conducted in response to any ongoing world events.

These test flights were part of a planned test event and resulted in the achievement of 197 total successful missile flight test launches of the Trident II D5 strategic weapon system.

Test flights were launched from a submerged SSBN and landed in a broad ocean area of the Atlantic Ocean. As part of standard safety requirements, NOTAMs were issued identifying no-fly zones. Notice to Mariners was issued identifying stay-out areas for the pre-scheduled test period.

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Donald Standeford
Founder of The Standeford Journal. I'm an American independent investigative journalist, intel/geopolitical analyst, and world traveler.
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