Former Montreal Maine and Atlantic Railway Ltd. employees Tom Harding, right, Jean Demaitre, centre, and Richard Labrie are escorted by police to appear in court in Lac-Megantic, Que., on Tuesday, May 13, 2014. The three railway employees charged in the Lac-Megantic train disaster will be back in court in March to have a date set for a preliminary hearingTHE CANADIAN PRESS/Ryan Remiorz