A pair of Union Pacific RP20BD locomotives, 2618 and 2628, shuttle power around the locomotive shop at the road's Davidson Yard in Fort Worth, Texas, on October 16, 2011. Built by RPI, UPY 2618 was constructed from UP B23-7 149, which was Missouri Pacific 4649 before that, and originally MP 2338. UPY 2628 was also constructed from a UP B23-7, 184, which was built as MP 4684.
