anniversary commemoration of the deaths of thousands of polish soldiers when it crashed in heavy fog. we re also going it look at some live pictures coming in from warsaw, poland. this is a nation in absolute shock. they are in mourning. this is just one vigil that is going on there in warsaw and we ll bring you the latest ahead. also, politicians from both parties reacting to supreme court justice john paul stevens decision to retire. the next half hour of cnn saturday morning, an in dep-de how this will affect the nation s top court.