U.S. Navy Hospital Corpsman 2nd Class Michael Hopper, right, the assistant leading petty officer with Black Sea Rotational Force (BSRF) 14, demonstrates the techniques used for urgent needle decompression of the chest Jan. 8, 2014, in Mihail Kogalniceanu, Romania. BSRF is an annual multilateral security cooperation activity between the U.S. Marine Corps and partner nations in the Black Sea, Balkan and Caucasus regions designed to enhance participants collective professional military capacity, promote regional stability and build enduring relationships with partner nations.