VirTra Systems, Inc.'s patent-pending Threat-Fire device safely simulates the pain of hostile return fire with a 300 millisecond electric stun (adjustable to 2.5 seconds). The Threat-Fire IITM is a clip-on return fire simulator, similar in function to the Threat-Fire belt; however, the IITM is designed to clip-onto an officer or soldier's duty belt for maximum efficiency. Threat-Fire IITM is not only small, lightweight and designed to be unobtrusive, but it is also rechargeable and compatible with VirTra's wireless system. VirTra contends that adding Threat-Fire to a simulator provides more realistic and thorough training, with trainees experiencing heightened nervousness and stress during the simulated situation.