FEMA and other relief and rescue services face significantly different challenges in the fire zone than they did on the Gulf Coast in 2005.
For example, the fires aren't covering every square foot of the region, as Katrina did. The devastation in California is intense but not universal.
During and immediately after Katrina, the destruction was so complete that relief personnel and supplies -- even the U.S. Army -- could not get within miles of the disaster's epicenter, New Orleans' Lower Ninth Ward, for several days.
By contrast, roads in Southern California have remained open for residents to get out and help to get in without delay. Residents there are generally more affluent and are able to use their own vehicles to escape, whereas many of Katrina's victims were poor and had no means of transportation.
Victims in California are not stranded on rooftops without food or drinkable water, but are able travel the relatively short distances to safe places.
One of those safe places is San Diego's Qualcomm Stadium, which is not endangered by the fires. FEMA and other relief agencies are able to stage supplies and meet victims' needs in an organized way.
New Orleans' Superdome, on the other hand, sitting in the center of the disaster zone, was severely damaged by hurricane winds and threatened by rising water. What had been a shelter devolved into a trap.
Katrina also wiped out the Gulf Coast's communications infrastructure, crippling the coordination of relief efforts -- even for the military.