Absurd. Like, seriously. Look at this fleet of Blue Angels jet planes fly in a perfect pattern in a practice session. The flight pattern they were practicing, I'm assuming here, is called "Let's get these flying metal beasts as close as possible so that one inch of a mistake will kill us all". The wing of one plane is right on top of the cockpit of the other. Nuts, these guys.
This is one is pretty damn crazy too: