New advanced sniper weapon sight sees bullets, engages targets 1.3 miles away . The new ThermoSight HISS-HD is the ultimate sniper sight for precision shooters. [Image courtesy: Teledyne FLIR Defense] ? ? Teledyne FLIR Defense, which is part of Teledyne Technologies, recently unveiled its new long-range cryo-cooled thermal sniper sight, the ThermoSight HISS-HD . The lightweight, high-performance add-on unit enables precision shooters to detect, identify, and engage ta...