U.S. Navy Sonar Technician Surface 1st Class John Galliher uses binoculars to track air and surface contacts aboard the forward-deployed guided missile destroyer USS Donald Cook (DDG 75) as the ship enters port in Souda Bay, Crete, March 18, 2014. The Donald Cook was the first of four Arleigh Burke-class destroyers to be forward-deployed to Rota, Spain on a scheduled patrol to the U.S. 6th Fleet area of operations as part of the President's Phased Adaptive Approach to European ballistic missile defense.