The Narcos and Technicals should be relatively easy to find. They will have gravitated to the rich condos and highrises to set up their Caliban's kingdoms, around which they will hold court as they send out posses of gunmen to rob, kill, and loot swag. They are criminals, and will not be smart enough to think like professional jihadists, who would deliberately lie low in middle class and Muslim areas. Regular infantry will deal with these clowns, deputized under the Louisiana State Police to maintain the veneer of posse comitatus. The technicals and narcotraficantes will die violent deaths that you will not hear about.
The smart narcos left town with their high grade supply on Saturday, at the latest. Before landfall. Needless to say, those are the ones whose protection contracts with certain police officers bought their way out of town. They aren't around to die. They're watching this on television. They're also watching the street value of their supply go up, given the fact that a lot of processed heroin and cocaine is lying at the bottom of the water.
Be Seeing You,
Chris