Still being worked, I believe. I don't think there are any similar FJ helmets in operation at the moment. ISTR a problem with optical illusions at lower flying heights because the NVG sensors were spaced so far apart from each other on the side of the helmet. With HMCS tech, it is a massive plus to have integrated NVG capability, otherwise the magic green writing highlighting targets and off boresight missile cuing can't be used at night.