SAN DIEGO –The Navy deployed two Arleigh Burke-class guided missile destroyers in mid-March to conduct border security objectives in support of the U.S. Northern Command southern border mission: the USS Gravely (DDG 107) to the Gulf of America and the Caribbean, and the USS Stockdale (DDG 106) to the Pacific Ocean. Earlier this summer, the USS Cole (DDG 67) relieved the USS Gravely after 83 days of service to the mission.