190410-N-HV059-1023 ATLANTIC OCEAN (April 10, 2019) Sailors aboard the Arleigh Burke-class guided-missile destroyer USS Jason Dunham (DDG 109) stand by as the ship prepares to conduct crew serve weapons exercise with USCGC Campbell (WMEC 909) and HMCS Ville De Quebec (FFH 332) during exercise Frontier Sentinel 19. Jason Dunham is participating in exercise Frontier Sentinel 19, which helps to establish conditions for security and stability in the region as Canada and the United States work closely to defend North America from rapidly evolving threats. (U.S. Navy photo by Mass Communication Specialist 2nd Class Sonja Wickard/Released)