The Navy used drones to sink a retired warship

A U.S. warship used aerial and maritime drones to help sink a decommissioned frigate last fall, Fourth Fleet officials have confirmed, adding that the experience is now shaping how the Navy will go into future battles.On or about Sept. 28, somewhere in the Fourth Fleet’s slice of the Atlantic Ocean, the littoral combat ship Cooperstown launched four unmanned aerial vehicles and one unmanned surface vessel against the former USS Simpson, a Perry-class guided missile frigate that was until r