A Russian Kamov KA-27 "Helix" 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 Apr. 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.