190518-N-VN584-1083 GULF OF ALASKA (May 18, 2019) Boatswain’s Mate Seaman Viviana Casulcintron, from Yabucoa, Puerto Rico, uses a telescopic alidade on the bridge wing of the Arleigh Burke-class guided-missile destroyer USS Russell (DDG 59) while participating in exercise Northern Edge 2019. Northern Edge is one in a series of U.S. Indo-Pacific Command exercises in 2019 that prepares joint forces to respond to crisis in the Indo-Pacific region. (U.S. Navy photo by Mass Communication Specialist 2nd Class Alex Corona/Released)