BNSF ET44C4 3979 leads a Willow Springs-North Bay Z train through the dip at West Darling.
SBDCHI rolls downgrade around the S curves just east of Flagstaff, AZ.
A westbound BNSF manifest was accelerating through the dip at West Darling, AZ and getting a swing on the climb up to Cosnino on Sept. 20, 2004, led by C44-9W No. 5085.