Ambassador Mark Pekala, U.S. ambassador to Latvia, observes a joint coordinated live fire exercise with U.S. Marine Corps Lt. Colonel Steven Wolf (fourth from the left), commanding officer for Black Sea Rotational 13 and Latvian Land Forces during Exercise Summer Shield 10 aboard Camp Adazi, Latvia, April 23, 2013. Summer Shield focuses on integration of fires and maneuver in a joint environment to build partner nation capacity while enhancing our interoperability between the United States, Lithuania, Estonia, and Latvia. (U.S. Marine Corps photo by Lance Cpl Michael Dye/released)