For Valentines day figured I would post a picture from Valentine, Arizona. It's hard to beat the Santa Fe for their variety of power. 5145 a SD40-2 Leads 5516, a SD45-2B, with an 9551 SF30-C and what I think is a couple GP50'S or 60's.
The EMD SD (special duty) series are a strong and reliable kind of locomotive which still serve America's rails today. They have proved themselves reliable by clocking in several million miles of freight service.