Nightly News | August 15, 2013
>>> federal investigators have now recovered the black boxes from that deadly u.p.s. plane crash short of the runway in birmingham, alabama, early yesterday morning. tonight they say there's no evidence of a pre-accident fire or engine failure in the crash. and despite the charred condition of the flight recorders, the ntsb tells nbc news they're optimistic they can recover the data they need to solve the mystery of this crash.