JT4 stands for Joint Test, Tactics, Training and Technology. On the western ranges that we support, we enable testing of weapon systems from initial conceptual and developmental phases all the way through the fielding, upgrade and sustainment of those systems, keeping them viable throughout their lifecycles. We staff and build the ranges where those weapons are tested for lethality and effectiveness. We also support our Warfighters as they develop tactics that maximize their probability of success and survival during combat operations. JT4 develops the range environments that allow our Warfighters to train under operationally relevant and incredibly challenging conditions to hone their combat skills. We do all of these things using cutting-edge technology and techniques.