Why is this Mono Behavior in the animator?

I'm looking through the 3D Game Kit from the asset store to accustom myself with the animator, and I'm just wondering what this is referring to. I was looking into controlling MonoBehaviors through the animation controller the other day and thought I had come to the conclusion that it couldn't be done directly, so what's this?

 

It probably a StateMachineBehaviour on one of the selected state

https://docs.unity3d.com/ScriptReference/StateMachineBehaviour.html

 

I'm still not following.

1. The Airborne state doesn't have a script attached to it
2. The inspector says Mono Behavior not StateMachineBehavior