Leaning into the joint-line to the CSX Chattanooga Sub on this bitter cold morning, Sheffield bound NS 163 (Knoxville, TN-Sheffield, AL) get the medium clear from the CSX signals to proceed west (North in NS terms). Leading the southern built junk train is a fairly clean Kansas City Southern motor leading the way, kinda adding a little color to this manifest that normally has the typical black and whit motors leading.