 Even with declining passenger revenue through the 1950s and 1960s, the B&O Passenger Department relied heavily on trains such as the "Metropolitan Special" because of the revenue generated by moving mail and express packages.However, in 1967, the United States Postal Service dealt a heavy blow to the B&O, canceling most of its lucrative post office contracts.With such a drop in revenue, the fate of the "Metropolitan Special" was sealed.