A wolf's flock walk in a group or team and they followed a fixed type of thickness.
The three wolves of the first red circle are the oldest, the sick, the weak.But their experience is more.
They were given in front of them due to their speed the rest of the team will follow them.
Yellow spots on their back the five most powerful of the team and they are fighter wolves.Their work is to support the team ahead and to deal with any attack.
Right behind them, young there are fewer strengths.But the middle group is the most protected.Because the green marked group behind them is very strong and the warrior wolf and their job are protecting them from the back if any attack from the back.

Blue marked lonely behind them
Wing leader

and he's behind from everyone.
His responsibility is whether anyone is falling behind or not.

That leader

It's not like that, Leaders

will always have to be in front of others, they need to go behind to everyone if its necessary.

Leadership is like this.