Soo Line tested the Burlington Northern SD60MACs in 1993. Here, Nos. 9500, 9503 and 9502 are leading Soo Line train No. 430 and is meeting train No. 431 led by a Soo SD60 at Green Island, Iowa, on a dreary October 17, 1993. At least the colorful test locomotives and pretty autumn leaves brighten the scene.