220310-N-EV253-1142 SAN DIEGO (March 10, 2021) – A GAU-21 .50-caliber machine gun is loaded and prepared for a weapons qualifications course on an MH-60S Knighthawk helicopter assigned to the “Merlins” of Helicopter Sea Combat Squadron (HSC) 3. HSC-3 is the Navy’s West Coast MH-60S fleet replacement squadron, responsible for training pilots and aircrewmen by providing the most capable warfighters to the fleet. ( Navy photo by Mass Communication Specialist 2nd Class Sara Eshleman)

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Keywords: .50, aircrewman, calibre, hsc-3, m240, mh-60s, naval, soothersmaylive