(Left to right) U.S. Senators John Barrasso (R-WY),

(Left to right) U.S. Senators John Barrasso (R-WY), John Hoeven (R-ND), John McCain (R-AZ), Latvian Chief of Defense Lt. Gen. Raimonds Graube, and Latvian Lt. Col. Gunars Kaulins, the exercise director of exercise Summer Shield, discuss the interoperability between U.S. and Latvian service members during Summer Shield during their visit to a range near Camp Adazi, Latvia, April 15, 2014. United States Marines with 3rd Battalion, 8th Marine Regiment, 2nd Marine Division assigned to Black Sea Rotational Force 14.2 are participating in Summer Shield in Latvia. This is the 11th iteration of the Summer Shield exercise, a joint staff planning and live-fire maneuver event designed to enhance the NATO force’s capacity and capability to integrate combined arms and maneuver at the battalion and brigade level. It also increases partner capacity, promotes regional stability, and enhances Latvian, Lithuanian, Estonian, and U.S. interoperability as NATO allies. (Official Marine Corps photo by Lance Cpl. Scott W. Whiting, BSRF PAO/ Released)