Vityaz-D Deep-sea drone that reached bottom of Mariana Trench to undergo upgrades | WHAT REALLY HAPPENED X-Frame-Options: SAMEORIGIN

Vityaz-D Deep-sea drone that reached bottom of Mariana Trench to undergo upgrades

The new version would be able to submerge without a bottom station, because the drone will manage communication on its own, according to a source in the military-industrial complex

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