Maj. Gen. Gregory J. Vadnais, Adjutant General and Director of Military and Veterans Affairs for the Michigan National Guard discusses the impact of 155mm artillery rounds with a Latvian joint fires observer during the eXportable Combat Training Capability exercise on Camp Grayling Joint Maneuver Training Center, Mich., July 14, 2014. The artillery rounds, fired by an M777A1 howitzer of the 1st Battalion, 119th Field Artillery Regiment, were also observed by Lt. Gen. Raimonds Graube, Latvian Chief of Defense. (U.S. Army photo by Staff Sgt. Kimberly Bratic, Michigan National Guard/Released)