U.S. Army Paratroopers assigned to 54th Brigade Engineer Battalion, 173rd Airborne Brigade, conduct live-fire training on an 50-caliber machine gun during exercise Serrated Edge II at the training range in Slunj, Croatia, Jan. 28, 2020. Exercise Serrated Edge II is a live fire and combat skills proficiency training exercise for the 54th Brigade Engineer Battalion, 173rd Airborne Brigade. Paratroopers will qualify on their individual and crew served weapons, and build combat readiness in Engineering, Military Intelligence and Signal skills during this training in Croatia. (U.S. Army Photo by Graigg Faggionato)