The original Defiant, commanded by Captain Benjamin Sisko, was on the front lines during the Dominion War. When it was lost to the Breen at the Second Battle of Chin’toka, Starfleet assigned the U.S.S. Sao Paulo to Deep Space Nine, but gave Sisko and his crew permission to rename the ship to Defiant.
Almost 35 years later Starfleet has launched the Tactical Escort Refit: Sao Paulo Class in honor of that ship. This vessel comes equipped with Quad Phaser Cannons. This fearsome energy weapon draws power from the ship’s engines to deal massive damage to an enemy. The Quad Phaser Cannons scale in effectiveness with your Rank and Grade, and may be equipped on any Escort or the Dreadnought Cruiser.