BALTIC SEA (April 12, 2016) A Russian Sukhoi Su-24 attack aircraft makes a low altitude pass by USS Donald Cook (DDG 75) April 12, 2016. Donald Cook, an Arleigh Burke-class guided-missile destroyer forward deployed to Rota, Spain, is conducting a routine patrol in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe. (U.S. Navy photo/Released)
BALTIC SEA (April 12, 2016) Two Russian Sukhoi Su-24 attack aircraft fly over USS Donald Cook (DDG 75) April 12, 2016. Donald Cook, an Arleigh Burke-class guided-missile destroyer forward deployed to Rota, Spain, is conducting a routine patrol in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe. (U.S. Navy photo/Released)
BALTIC SEA (April 12, 2016) A Russian Kamov KA-27 HELIX helicopter flies low-level passes near the Arleigh Burke-class guided missile destroyer USS Donald Cook (DDG 75) while the ship was operating in international waters April 12, 2016. Donald Cook is forward deployed to Rota, Spain, and is conducting routine patrols in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe. (U.S. Navy photo/Released)
BALTIC SEA (April 12, 2016) Two Russian Sukhoi Su-24 attack aircraft fly over the USS Donald Cook (DDG 75) Apr. 12, 2016. Donald Cook, an Arleigh Burke-class guided-missile destroyer, forward deployed to Rota, Spain is conducting a routine patrol in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe. (U.S. Navy photo/Released)
BALTIC SEA (April 12, 2016) A Russian Sukhoi Su-24 attack aircraft makes a low altitude pass by USS Donald Cook (DDG 75) April 12, 2016. Donald Cook, an Arleigh Burke-class guided-missile destroyer forward deployed to Rota, Spain, is conducting a routine patrol in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe. (U.S. Navy photo/Released)
BALTIC SEA (April 12, 2016) Two Russian Sukhoi Su-24 attack aircraft perform multiple low-level passes over USS Donald Cook (DDG 75) April 12, 2016. Donald Cook, an Arleigh Burke-class guided-missile destroyer forward deployed to Rota, Spain, is conducting a routine patrol in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe. (U.S. Navy photo/Released)