Look at the photo: The first 3 are the old & sick, they walk in front to set the pace of the entire pack. The next 5 are the strongest & best, they are tasked to protect the front side if there is an attack. In the center are the rest of the packmembers, always protected from any attack.
Then the 5 also among the strongest are following, protecting the back side. Last is alone, the alpha. The LEADER. He controls everything from the rear, ensures that no one is left behind. He is always ready to run in any direction to protect, and serves as the ‘bodyguard’ to the entire group.
Just in case anyone wanted to know what it really means to be a leader. It is not about being out front. It means taking care of the team.