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2013年12月9日，美国亚利桑那州尤马海军陆战队航空站，在“钢铁骑士”合成演习期间，美国海军陆战队 HMLA-469 轻型攻击直升机中队的 UH-1Y“毒液”通用直升机正在起飞。该型机升级了发动机和全数位数据链驾驶舱，并加装FLIR侦查系统，用以替代服役时间较长的 UH-1N 直升机。（A U.S. Marine Corps UH-1Y Venom helicopter with Marine Light Attack Helicopter Squadron (HMLA) 469, Marine Aircraft Group (MAG) 39, 3rd Marine Aircraft Wing (MAW) take off from Marine Corps Air Station Yuma, Ariz. on Dec. 9, 2013, during exercise Steel Knight (SK-14). SK-14 is a large-scale combined arms, live-fire exercise integrating ground troops from 1st Marine Division, aviation and logistical support from 3rd MAW and 1st Marine Logistics Group to ensure that our nation is fully prepared for employment as a maneuver force across the range of military operations.）