U.S. paratroopers and Slovenian soldiers prepare a C4 explosive charge during a live-fire demolition as part of Exercise Rock Knight at Pocek Range in Postonja, Slovenia, July 20, 2017. The paratroopers are assigned to the 54th Brigade Engineer Battalion, 173rd Airborne Brigade. The exercise is a bilateral training exercise between U.S. and 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 Paolo Bovo