article_snippet.sent: 13,000 personnel from 14 countries operating more than 50 ships and submarines as well as 70 aircraft.
article_snippet.sent: CNN was invited to spend a day aboard one of the vessels taking part --
article_snippet.sent: the U.S. Navy's guided missile cruiser USS Vicksburg.
article_snippet.sent: It's the current flag ship of a standing NATO maritime group.
article_snippet.sent: Other personnel on the U.S. Navy's guided missile cruiser USS Vicksburg tell us competition between different nations and even individual ships and subs is also a big motivator.