MANILA, Philippines — A submarine drone suspected to be from China was recovered in waters off the central Philippines, police said on Thursday, warning of “potential national security implications.” ...

Narco-submarines, the clandestine vessels used by drug traffickers, represent one of the most sophisticated and elusive methods of smuggling drugs across international waters.

ABSTRACT: The Tonga submarine event refers to the volcanic eruption near the Tonga islands in the South Pacific Ocean, which produced a large plume possibly reaching the stratosphere and mesosphere.

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Naval Air Systems Command has directed the inspection of each V-22 Osprey’s Proprotor Gearbox -- the critical part of machinery linked to a series of crashes in recent years -- to verify its current ...