NORTH ALTANTIC SEA, June, 27. 2017.ORP Kosciusko,HMCS St John Dynamic and HNLMS Evertsen in sail in close formation during Mongoose Photo Exercise .Dynamic Mongoose is a high-end multi-national exercise designed to sharpen existing NATO Anti-Submarine Warfare (ASW) skills in a deep water training area. Dynamic Mongoose 2017 showcases NATO Maritime capabilities and interoperability. This year, the exercise involves more than 2,000 military and maritime personnel from 10 NATO nations as well as 5 submarines,11 ships and 8 Maritime Patrol Aircraft (MPA). NATO Photo by FRAN CPO Christian Valverde