Excerpted from another thread on another board:
"I've just learned from one of my patrolmen that just returned from New Orleans, that there are snipers on top of the charity hospital. They've looted and are burning the Oakwood Mall. Once again they have killed police officers, this time Gretna Police Department lost 4 officers, slain in the line of duty."
Just keep this in mind, this is unconfirmed information but could be related to your CNN post.
Sniper fire halts hospital evacuation
http://www.cnn.com/2005/WEATHER/09/01/katrina.hospital.sniper/index.html?section=cnn_latest
Coupled with nightvision and restore order quicker.