Heightened intermodal competition took a toll on Norfolk Southern’s volume, revenue, and profits in the fourth quarter. The 7% drop in intermodal volume drove a 4% decline in overall traffic as NS (NYSE: NSC) lost container business to rival CSX (NASDAQ: CSX), which launched an intermodal alliance with BNSF Railway (NYSE: BRK-B) last summer. NS Chief Executive Mark George said the fourth quarter played out amid a softer volume environment than had been predicted. “But even so, we controlled the controll ...