The Longmont Switch heads north at Highland, CO. Included in the consist is a 3-window SD60M.

This is my first train shot with a lens I picked up last week, an old Vivitar 120-600mm f/5.6-f/8. I call it my "Bigitar" because I believe it's the biggest lens Vivitar ever sold. It's not Canon "L" glass by any means, but not bad for a $45 Craig's List find.
All manual, focus it, set the f-stop and shutter speed.
Fun! :)