Last light at Tunnel City Brand-new Soo Line EMD SD60 No. 6012 leads the hot Ford train westbound out of Tunnel City, Wisconsin, in the very last light of September 20, 1987. Trailing is recently acquired and repainted former Burlington Northern SD40B No. 6450 (BN 7600), along with Soo SD40 No. 755 and Milwaukee Road SD40-2 No. 134.