Proposal for Hiring of Escorting Skilled out- sourced staff for en- route Trouble shooting, operation, Record Keeping, Attachment and detachment of HOG coupling in the trains originating from Sealdah station for any type of Special Trains ( SG & LHB ) for One ( 01 ) Year except three premium trains like 12313/ 12314 ( SDAH- NDLS ) Rajdhani Exp, 12259/ 12260 ( SDAH- BKN ) Duranto Exp., and 22317/ 22318 ( SDAH- JAT ) Hamsafar Exp.