A U.S. Army platoon leader from the Field Artillery Squadron, 2nd Cavalry Regiment and a Joint Terminal Attack Controller from the Croatian Air Force collaborate in a situational training exercise with NATO Allies during Saber Strike 16 at the Estoni...

A Polish Army Soldier scans with binoculars during Saber Strike 16 at the Estonian Defense Forces central training area near Tapa, Estonia on June 17, 2016. Saber Strike is a long-standing U.S. Army Europe-led cooperative training exercise designed t...

A U.S. Army Soldier from the Field Artillery Squadron, 2nd Cavalry Regiment participates in a field training exercise with NATO Allies during Saber Strike 16 at the Estonian Defense Forces central training area near Tapa, Estonia on June 17, 2016. Sa...

A Joint Terminal Attack Controller from the Croatian Air Force puts on his combat vehicle crewmember helmet as he and a U.S. Army Stryker vehicle crew from the Field Artillery Squadron, 2nd Cavalry Regiment prepare to conduct a tactical movement duri...

Soldiers and Airmen from a multinational contingent collaborate in situational training exercises with NATO Allies and partners during Saber Strike 16 at the Estonian Defense Forces central training area near Tapa, Estonia on June 17, 2016. Saber Strike is a long-standing U.S. Army Europe-led cooperative training exercise designed to improve joint interoperability through a range of missions that prepare the 14 participating nations to support multinational contingency operations.