You're the officer in command of a mighty military battle. Your heavy artillery is in place. You sight the enemy. Set your trajectory and firepower, compensating for the wind. And fire! A near miss? Remember your wind speed and gauge where the shot landed, so you can correct for the next one. But you opponent gets off a round first. Did you survive? Will your next shot be on the mark? If so, you will win the battle, but not the war. The landscape and the placement of your gun changes, and the battle begins again.