My Question is this train gets a HWH WAP4 from Durgapur to Vishakhapatnam.Also 15941 Jhajha Dibrugarh,15661 Ranchi Kamakhya,15629/15929 Chennai Egmore Dibrugarh,15905 Vivek Exp/13421 Malda Town Surat etc gets HWH WAP4 from Durgapur....All the trains are weekly...How does the HWH WAP4 comes to DGR..?? Distance b/w HWH ELS & Durgapur is 158 km.Does the Loco covers such a huge distance as a Light Engine?