Through the Trees A service member prepares for the start of the Bull Run III alert and readiness exercise at Bemowo Piskie Training Area, Poland, Jan. 9, 2018. U.S., U.K., Polish, Croatian and Romanian troops assigned to Battle Group Poland participated in the exercise. Photo courtesy of Polish 15th Mechanized Brigade SHARE: Download: Full Size (0.41 MB) Credit: Polish 15th Mechanized Brigade VIRIN: 180109-A-YZ667-0015C.JPG Photo Gallery