I heard Adrian Rogers give this example:
"We all have seen Canada Geese fly in their V formation with one leg of the V formation longer than the other leg. Why do they fly in the V formation? The lead goose is making it easier for the other geese who are following his lead. He is moving the wind resistance of the other geese following him. The rest are cruising. But after awhile the lead goose gets tired and drops back and the next goose moves up. Engineers in the wind tunnel experiments have discovered that geese flying in the V formation can fly 72% further than by themselves flying alone. Geese flying in the V formation illustrate the necessity and advantages of practicing both leadership and followship."