Modern snipers can kill people who are up to two miles away. To do this, they use some very advanced calculations to adjust their aim according to the anticipated effects of wind, humidity, altitude etc.
These influences are so great that snipers may have to aim at a point 2m to one side of their actual target.
Today’s invention is a defence mechanism against such attacks. The blue force roll out a camouflaged line of sensors B, using eg a radio controlled robot vehicle. These lie on two parallel tracks, so that the passage overhead of the shock wave of a high-velocity bullet can be detected and its direction estimated.
This information is sent wirelessly to a line of air blowers A (faster than the bullet can travel). A few of these can issue an upwards jet of air in a random direction, from underneath the passing round.
This deflection can be more than enough to cause the shot to miss with very high probability; alerting the blue force to red’s position and undermining the sniper’s confidence.