Burlington Northern MP15 #4004, pulling caboose BN #11551 off an inbound train and thru a spring switch. #4004 was built March 1975 as SLSF #365. Unit later became BN #1004, then BNSF #3704
Burlington Northern MP15DC #4004 was built March 1975 as Frisco (SLSF) #365. Unit later became BN #1004, then BNSF #3704