U.S. and Portuguese Marines load into a U.S. Marine Corps CH-53E Sea Stallion helicopter aboard the amphibious transport dock ship USS Arlington in preparation for a combined helicopter-borne assault training near Pinheiro Da Cruz, Praia Da Raposa, Portugal, Oct. 21, 2015 during exercise Trident Juncture 15. U.S. Marine Corps photo by Sgt. Austin Long