CENTREVILLE, Va., Feb. 22, 2021 /PRNewswire/ — Parsons Corporation (NYSE: PSN) has won a seven-year contract with the  U.S. Postal Service’s (USPS) Nationwide Program Management Services (PMS) worth a total potential value of $600 million. The deal is the company’s third consecutive with the USPS. The seven-year timeframe assumes all option periods are exercised. “We look forward to continuing our […]