Paratroopers open a breach during a live-fire exercise as part of Exercise Rock Knight at Pocek Range in Postonja, Slovenia, July 25, 2017. The paratroopers are assigned to the 2nd Battalion, 503rd Infantry Regiment, 173rd Airborne Brigade. Exercise Rock Knight is a bilateral training exercise between U.S. and the Slovenian armed forces, focused on small-unit tactics and building on previous lessons learned, forging the bonds and enhancing readiness between allied forces. Army photo by Davide Dalla Massara