A smoking case from a 5.56mm round flies out of an M4 during reflexive fire training at Fort McCoy, Wisconsin, June 23. The training was part of Guardian Justice, a functional exercise, broken down into two-week cycles, centered on squad and team-level training with a focus on internment, resettlement, detainee operations and combat support. During each two-week cycle, Soldiers train on internment operations, weapons qualification, biometrics, reflexive fire, Military Operations on Urbanized Terrain (MOUT), non-lethal Tasers, MP battle drills and situational training exercises. (U.S. Army Reserve photo by Sgt. Audrey Hayes)