Poland stands in formation for the opening ceremony of Rapid Trident in International Peacekeeping and Security Centre, Yavoriv, Ukraine, Sept. 3 2018. Marine Corps / Cpl. Andy Martinez. Cobra Gold 18: U.S. Marines support U.S. Army Artillery Raid during CG18 By Jeff Schogol on April 4, 2018 T&P on Facebook Looking for a great career? Or know another veteran, service member, or military spouse who is? Get started at Hirepurpose.