About 2 Trademarks found that are owned by Vision Systems International Llc

helmet or head-mounted display system having display optics, image source, electronic tracker transducer, graphics processor/video hardware and software, tracking hardware and software, or cable connections thereto, all to enable the wearer to track, cue and verify target locations and positions

helmet or head-mounted display system having display optics, image source, electronic tracker transducer, graphics processor/video hardware and software, tracking hardware and software, or cable connections thereto, all to enable the wearer to track, cue and verify target locations and positions