190528-N-ZU663-081 LISBON, Portugal (May 28, 2019) Lt. j.g. Michael Valania, center, explains bridge operations to distinguished visitors aboard the Arleigh Burke-class guided-missile destroyer USS Roosevelt (DDG 80) during a shipboard tour held in conjunction with exercise Formidable Shield, May 28, 2019. Roosevelt, homeported in Mayport, Fla., is operating in the U.S. 6th Fleet area of operations in support of regional allies and partners as well as U.S. national security interests in Europe and Africa. (U.S. Navy Photo by Mass Communication Specialist 1st Class Susan Damman/Released)