With the naked eye you would see nothing but darkness yet through modern night vision an operator can detect and track a human figure from hundreds of meters away even in a pitch black forest. Thermal optics take it further by reading heat signatures through foliage smoke and camouflage which means the person glowing on screen would stand out even if they were completely invisible to standard night vision. Fused Tactical Optics or FTO combines both systems into one overlay allowing soldiers to s