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An MH-60S Sea Hawk helicopter, assigned to Helicopter Sea Combat Squadron (HSC) 25, hovers above a Mark VI patrol boat, assigned to Coastal Riverine Group 1, during a joint search and rescue exercise with U.S. Coast Guard Sector Guam, Feb. 23, 2018. HSC-25 maintains a 24-hour search and rescue and medical evacuation alert posture, directly supporting the U.S. Coast Guard, Sector Guam and Joint Region Marianas.