Bulgarian Army Colonel Iavor Mateev, right, officer-in-charge of Bulgarian forces participating in Black Sea Rotational Force 13, addresses Bulgarian, Serbian, Romanian and American forces at Novo Selo, Bulgaria, during an opening ceremony July, 1, 2013. The opening ceremony marked the beginning of Platinum Lion 13, BSRF-13’s five week exercise in Bulgaria. The exercise allows the U.S. and Balkan military forces to practice stability, counterinsurgency, and peacekeeping operations in order to build partner nation capacity, enhance interoperability between countries and increase the overall effectiveness of the participating partnered nations. (U.S. Marine Corps photo by 1st Lt. Hector Alejandro) - Bulgarian Army Colonel Iavor Mateev, right, officer-in-charge of Bulgarian forces participating in Black Sea Rotational Force 13, addresses Bulgarian, Serbian, Romanian and American forces at Novo Selo, Bulgaria, during an opening ceremony July, 1, 2013. The opening ceremony marked the beginning of Platinum Lion 13, BSRF-13’s five week exercise in Bulgaria. The exercise allows the U.S. and Balkan military forces to practice stability, counterinsurgency, and peacekeeping operations in order to build partner nation capacity, enhance interoperability between countries and increase the overall effectiveness of the participating partnered nations. (U.S. Marine Corps photo by 1st Lt. Hector Alejandro)