Joe Petrocco stands at the edge of one of his vegetable fields south of Brighton.
He holds a shovel upside-down, just above the neck of the blade, with a pop bottle rocket notched into the other end of the wooden handle. He lights the fuse, holds out his arm and with a hiss and a puff of smoke, the firecracker launches out above the crops. It explodes with a sharp crack, scaring off a cluster of blackbirds nestled in the field.
“This isn’t what I do every day,” Petrocco said, smiling.