The 5 behind them are also among the strongest & best; they are tasked to protect the back side if there is an attack.
The last one is the LEADER. He ensures that no one is left behind. He keeps the pack unified and on the same path. He is always ready to run in any direction to protect & serves as the 'bodyguard' to the entire group.
Just in case y'all wanted to know what it really means to be a leader.