190630-N-NU281-1128 PACIFIC OCEAN (June 30, 2019) Ship riders from partnering navies aboard the Arleigh Burke-class guided-missile destroyer USS Michael Murphy (DDG 112) observe as Gunner's Mate 3rd Class Gabriel Ramos prepares to remotely fire a Mark-38 25 mm machine gun as part of a gunnery exercise (GUNNEX) during UNITAS LX. Michael Murphy is participating in UNITAS LX in Valparaiso, Chile, from June 24-July 3. UNITAS, Latin for "unity," is the world's longest-running multinational maritime exercise. Conceived in 1959 and first executed in 1960, UNITAS is a demonstration of U.S. commitment to the region and the strong relationships forged between our partner nations and their militaries. (U.S. Navy photo by Mass Communication Specialist 2nd Class Justin R. Pacheco/Released)