The Disabling Fire upgrade is the first tetherless training weapon developed by Pathfinder Systems. It will be incorporated into the Door Gunner Simulator (DGS) for the Royal Netherlands Air Force. The weapon model is the HK 417, which shoots 7.62 mm rounds, and is used for disabling fire (as opposed to sniper fire). Disabling Fire will be configured for the Cougar and NH-90 airframes in the DGS. The upgrade will include trainer-input malfunctions, muzzle flash, and tetherless pneumatic recoil. It will also have wireless communications with the Host system, an internal sensor array to communicate trainee weapon state to trainer, and its own ballistics model.