The Arleigh Burke-class guided-missile destroyer USS Porter (DDG 78) participates in ship formation maneuvering exercises while the Italian Navy conducts live fire gunnery exercises as part of Mare Aperto, Oct. 15, 2021. Porter, forward-deployed to Rota, Spain, is on its 10th Patrol in the U.S. Sixth Fleet area of operations in support of U.S. national security interests in Europe and Africa.