“Dugan Holler” CSX Q138, a Chicago/59th St to Baltimore/Penn Mary intermodal, rolls past the farm crossing at the mouth of Dugan Hollow, between the HARLEY MICHAELS and RED ROCK intermediates, while eastbound through the Potomac River valley. Configured 1+1+0, the power consists of: (1) CSXT 7200 (CM44AC) (2) [CSXT 840 (ES44AH) as MDPU]