All my life I have followed one rule while traveling in Indian Railways that to never allow passengers whose seat is not there to place their luggage under my seat. I have got into fights regarding this. Today I feel vindicated after the bomb blast on board SBC GHY Express. Never ever allow anyone unknown to you place their luggage under your seat. No need to feel guilty as your life is more precious. I started following this after a bad incident happened in late 80's on board GT Express. A guy who boarded in Agra kept 20 leather shoes under my seat and disappeared. Late at night some cops came and started questioning me regarding the consignment. They harassed me a lot . Nowadays I don't allow anyone to place their luggage under my seat even it is a 80 year old lady.