Speaking of consists, I was impressed a few months ago when I saw a mid-train locomotive for the first time, then last week I saw a BNSF train that was a mile l

Speaking of consists, I was impressed a few months ago when I saw a mid-train locomotive for the first time, then last week I saw a BNSF train that was a mile long¹ with a single locomotive at the front and a second at the back which I’ve never seen before. ⸻ 1. Assuming average car length of 40'