insure his well being and comfort. bill: an incredible feat of daring. nik wallenda, the ultimate high wire act. that s the grand canyon beneath him on a wire 2 inches wade. all without any harness or safety catch. we ll show you that nail biting video. martha: new details on the hernandez situation when we come back. bill: the white house expressing serious concerns russia is not willing to play ball and send the leaker edward snowden back to the u.s. to face charges.