U.S. Navy warships exchanged fire with pirates 1, said a U.S. military mission in the Indian Ocean suffered pirate attack destroyer 1, the two sides exchanged fire. U.S. warship seized a "mother ship", captured five pirates, then the pirate boats sunk. Pirates attack U.S. Navy ships on the 1st said in a statement, "Nicholas" USS earlier in the day in the seas west of the Seychelles Islands, the surface of tasks when they were attacked by pirates.