A Romanian soldier (left,) assigned to the Romanian Land Forces, tries out an M224 60mm lightweight mortar system as Troopers (center, right,) assigned to 2nd Squadron, 2nd Cavalry Regiment, supervise during a static display by the unit after participating in the opening ceremony for Wind Spring 2015 at Smardan Training Area, Romania, April 16, 2015. The Wind Spring 2015 exercise is aimed at maintaining and increasing interoperability between NATO Allies. (U.S. Army photo by Sgt. William A. Tanner/released)