The US military's massive unmanned 'Manta Ray' submarine cleared its first sea test
One photograph of the Manta Ray shows it sitting adjacent to a support boat, and another shows it with people standing on ...
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'Ghost Shark and Manta Ray: Australia, US launch next-gen advanced drones'
NEW DELHI: The future of naval defenses in the Pacific could soon mirror a high-stakes tech thriller, with protagonists named Ghost Shark and Manta Ray. These aren’t characters from an upcoming ...