Accuracy Under Fire (A.U.FIRE) provides advanced haptic feedback that simulates injuries to enhance realism in police and military force-on-force training. Our system uses wearable TENS unit (E-stim) sleeves that enable instructors to remotely contract limb muscles, simulating the incapacitation caused by gunshot wounds or limb injuries. This injury simulator's immediate feedback delivers real consequences, pushing trainees to handle extreme stress, maintain tactical accuracy, and solve problems under pressure in real time. It allows them to practice fighting back accurately and effectively while injured, providing invaluable training experience before it happens in real life. A.U.FIRE fosters stress inoculation and a survival mindset, while providing crucial experience in weapon handling, accurate return fire, and tourniquet application under critical conditions—preparing officers and warfighters to perform confidently in a crisis.