U.S. Army Lt. Col. Adam Lackey (left), Battle Group

U.S. Army Lt. Col. Adam Lackey (left), Battle Group Poland commander, and Romanian army Maj. Musat Octavian (right), Air Defense Artillery “Blue Scorpions” Battery commander, discuss operations during a multinational quick response exercise, Bull Run 5.5, with Battle Group Poland at Olecko, Poland on June 11, 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 /22nd Mobile Public Affairs Detachment)