What on earth is going on in Joplin, MO?

Why would local law enforcement create such a huge perimeter around a makeshift morgue purposely designed to handle the growing number of victims resulting from the freak tornado’s that hit the area? Why would local law enforcement have a checkpoint on the road leading to the morgue and more importantly, why would these officials demand CNN’s camera be turned off and placed into the back seat of the car? Wierd?

http://www.youtube.com/watch?v=my4t54Rj9-o&feature=player_embedded