They are testing a new high-tech sound direction-detection system.Imagine a small recon unit of Army soldiers was advancing through hostile terrain on a high-risk scouting mission to find points of entry for a major follow-on armored ground assault. What if it was suddenly hit, even overwhelmed, with a massive array of enemy small arms fire? The soldiers take casualties, run for cover and immediately engage the enemy, yet the attackers are obscured from view. Where exactly is the enemy fire coming from? What if soldiers could immediately know the source of incoming fire? Perhaps a sniper is, by design, hidden...