Long range shooters, and especially snipers, operate as a team. As difficult as long range shooting is, it would be even harder without a spotter. Spotters are also trained snipers or long range shooters. The spotter has a number of jobs. He helps locate the target. He does most of the calculations for elevation, windage, and hitting a moving target. With several targets, the spotter decides which to hit first. Spotters also measure the humidity, temperature, and the angle of the shot. He then tells the sniper/shooter what adjustments to make to the rifle scope. Finally, the spotter tells the shooter where the round hit—on target or a miss—and what adjustments to make to get back on-target.