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Polish army Rak 120mm Self-Propelled Mortar Systems with 15th Mechanized Brigade, fire for effect during a lethality demonstration for exercise Puma 2 with Battle Group Poland at Bemowo Piskie Training Area, Poland, June 15, 2018, as part of Saber Strike 18.
This year's exercise, which runs from June 3-15, tests allies and partners from 19 countries on their ability work together to deter aggression in the region and improve each unit's ability to perform their designated mission. (U.S. Army photo by Spc. Hubert D. Delany III) Original public domain image from Flickr
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