NS Northbound Freight Train 340 rumbles through Springville, Al. on its way to Chattanooga, Tn. The 340 comes off of the KCS as M-SHNS ( Shreveport, La. to NS at Meridian, Ms. ) where NS runs the 340 to Irondale, Al. ( Norris Yard ) where it used to terminate, but recently the 340 has been running to Chattanooga, Tn. ( Debutts Yard ) I'm not certain if 340 is running to Chattanooga, Tn. on a permanent or temporary basis. Working for CSXT I know that we sometimes make a move like this if a particular yard can't handle the traffic, so they will start running a train on to another yard to be humped there.