Romanian service members with the 9th Mechanized Brigade flip a tire during a competition with U.S. Marines assigned to Black Sea Rotational Force (BSRF) 14 in Mihail Kogalniceanu, Romania, Jan. 17, 2014. 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.