Capt. Jonathan Blankenship, a company commander with Black Sea Rotational Force, confirms the assault on the enemy objective is complete during the final exercise of cold-weather training aboard Porsangmoen, Norway, Feb. 16-20, 2016. Arctic training was conducted by U.K. Royal Marine Commando Mountain Leaders and hosted by the Norwegian military to improve the U.S. Marine Corps’ capability to support their NATO Allies in extreme environments. - Capt. Jonathan Blankenship, a company commander with Black Sea Rotational Force, confirms the assault on the enemy objective is complete during the final exercise of cold-weather training aboard Porsangmoen, Norway, Feb. 16-20, 2016. Arctic training was conducted by U.K. Royal Marine Commando Mountain Leaders and hosted by the Norwegian military to improve the U.S. Marine Corps’ capability to support their NATO Allies in extreme environments.