Kanpur shed WAG-7 #27650 crawls into Nagpur pf 2 with a load of LPG carrying BTPGL wagons. Note the “support wagon” behind the loco to create a barrier between the head of a train and the highly explosive load behind in case of a collision. There is a similar “support wagon” at the rear too. Nagpur Jn., 2004-05-06. By Apurva (iti@vsnl.com).