John Ballestero, senior vice president and general manager of the Port of Miami Terminal Operating Co. will retire, effective Aug. 12, the company announced. He has been with POMTOC for more than nine years. POMTOC said it has hired Charles J. Arocha, a 30-year maritime industry veteran and one of the partner's that formed POMTOC in 1994, to fill Ballestero's position. Ballestero was instrumental in constructing new high-tech gates and communicati...