i assumed, in the nick of time, that the sound was due to a bomb explosion, and with presence of mind, opened the door of the emergency exit which was behind me. Though the door was opened within a few seconds of the blast, a number of passengers has already reached it to jump out. i could feel the passengers pushing my back, trying to make way for their escape. With many passengers crowded around me, all of them waiting to jump out at the same time, it was very difficult for me to make my way out.