Geese

 If a goose leaves the formation, the others move forward to fill the hole and the formation continues as efficiently as before. When a person leaves the team, the team may suffer for a short time, but it will quickly fill the void and move on. If the dropout decides to rejoin the team, his or her slot is gone, so now the person must take a position at the end of the lineup.

The geese in the formation honk to encourage those in front to keep up their speed. Team members should cheer each other, the slow ones that are holding the team back and the fast one to keep them pulling the team forward. The better each team member does, the better the team does.

The formation does not fly aimlessly; it has a destination and a course to follow to reach it, and each goose does its part to help the formation reach its destination. A team needs a goal and a course to follow to reach the goal, and each member must be dedicated to reaching the goal.