They do different jobs.

Five shirtless men stand outdoors in front of a black metal railing, with a multi-story building and green trees in the background. The man on the far left maintains a smiling, boxing stance with his fists raised, while the man on the far right holds a small object and repeatedly raises his right hand to scratch the back of his head. The man in the center looks forward with a neutral expression, and two other men stand behind them, one holding a dark object aloft.