The EMC-TA was a model of diesel locomotive produced for the Chicago, Rock Island and Pacific Railroad by the Electro-Motive Corporation in 1937. The original six Rock Island Rockets streamliners were three- or four-car stainless-steel semi-articulated trainsets built by Budd Company, powered by six identical locomotives, #601-606. The locomotives were classified as model TA—the T indicating Twelve hundred hp (890 kW), the A indicating an A unit. The Rock Island Line was EMC's only customer for the TA locomotive model.