12/04: Newtown 911 calls reveal calm amid chaos; Photographer captures fleeting glimpse of nature's greatest light show

Newly released 911 calls give insight into the Sandy Hook Elementary shootings in Newtown, Conn. Dispatchers and frightened callers were able to remain calm as a gunman carried out an attack no one could have imagined; and, photographer Dave Parkhurst has been braving the extreme elements of the Alaskan wilderness to capture the incredible display of Aurora Borealis on film.