ADAZI, Latvia-Marines with the Black Sea Rotational Force 17.1 march in formation in preparation for the opening ceremony of Exercise Saber Strike 17 at Camp Adazi, Latvia, June 3, 2017. The combined training prepares NATO Allies and partners to respond faster to regional crises and meet their own security needs by improving the security of borders and countering threats. (U.S. Marine Corps photo by Cpl. Devan Alonzo Barnett/Released)