When Kennedy confronts Wilson and Lisa at the stairs, the long shot from behind Kennedy's shoulder shows Wilson holding Lisa's right forearm as she stands to Wilson's left and slightly behind. The following close shot shows Wilson holding Lisa's left forearm with her half-hidden behind him.
Near the end of the movie Robert Mitchum says the barges with the arsenal are at Playa Blanca, which is on Mexico's west coast NW of Acapulco. In the final scene, after telling Gilbert Roland that he was headed north toward the border where he left Ursula Thiess in a pawn shop, he trots along the beach with the Pacific Ocean on his right -- clearly heading south.