On Sunday , August 28 , Canadian National Railway ( CN ) stopped all rail traffic on its lines south of McComb , Mississippi , ( lines owned by its subsidiary Illinois Central Railroad that extend into New Orleans ) , expectating damage from the hurricane . On Sunday , August 28 , Canadian National Railway ( CN ) suspended all rail traffic on its lines south of McComb , Mississippi ( lines owned by its subsidiary Illinois Central Railroad that extend into New Orleans ) , in anticipation of damage from the hurricane .