Photo ID: 113389 Date Shot Photo By Wednesday, November 26, 2025 Kevin Morgan Location Times Viewed BNSF Engine House Denver, CO 7 (Add a Comment) Subdivision Railroad Yard Shots SPTX Not a pair of units I ever expected to see individually in 2025, let alone in a lash-up together! A former Santa Fe SD45-2B and a former Amtrak F40PH are both being moved from California to Iowa. Neither is currently operational, and are being moved "DIC" (Dead-In-Consist). They will be transferred from BNSF to UP here in Denver to continue on to Iowa. Email Questions or Comments to the Webmaster or add a comment to the picture. Photo ID: 113387 Date Shot Photo By Wednesday, November 26, 2025 Kevin Morgan Location Times Viewed BNSF Engine House Denver, CO 6 (Add a Comment) Subdivision Railroad Yard Shots SPTX A look at the engineer's side...such as it is, considering there is no cab...of this SD45-2B. It was pretty fantastic seeing a unit wearing Santa Fe blue and yellow in 2025. Particularly a unit as unique as this one! These B-units were not built by EMD, but were modifications made by Santa Fe. Santa Fe removed the cabs and created the B-units. A total of eight such B-units were created from SD45-2s. One thing worth noting is that some people confuse a B-unit with a slug. A slug has no prime mover, but still has traction motors with power for the motors supplied by other units in its consist. A B-unit still has its prime mover, but simply has no cab and therefore cannot be controlled unless in an MU-consist with other units. Email Questions or Comments to the Webmaster or add a comment to the picture. Photo ID: 113384 Date Shot Photo By Wednesday, November 26, 2025 Kevin Morgan Location Times Viewed BNSF Engine House Denver, CO 6 (Add a Comment) Subdivision Railroad Yard Shots SPTX In the 1970s and 1980s, several railroads had a bit of a fad with B-units. Meaning units without a cab. The units still had a prime mover and traction motors, but could only be controlled when MU'd to other units. Such units are quite rare today, but it just so happened that an SD45-2B was coming through town at BNSF's Engine House today. SPTX 5703 has a bit of a storied history. It was actually originally delivered as a standard SD45-2 (with a cab). In fact, this was the unit that Santa Fe painted in red, white, and blue to celebrate the Bicentennial in 1976. However, in October 1987, Santa Fe converted three SD45-2s into B-units, removing their cabs. ATSF 5703 was one such unit. Note that the dynamic brakes were moved forward to the area where the cab had once been located to help improve cooling. The unit is now owned by a private individual named Noah McCann, and it is reportedly headed to Middletown, IA. Email Questions or Comments to the Webmaster or add a comment to the picture.