From a terrorists/insurgent perspective, this is an ideal time to attack the global oil and gas infrastructure.  If they had any attack plans in the works, now would be the time to launch them for maximum impact while we are most vulnerable.  It looks like they might have figured this out.    
As alan said here, "it sounds like a movie I heard about". To paraphrase PG's response:

cue the muhajadeen
Would that mean that the "central front of the war on terror" has now shifted to New Orleans?  From another perspective, has it shifted to an "everywhere and nowhere" front?  Should you choose to, how does one fight a war that is won or lost in the trading pits?  
Apparently the trading pit war is fought by releasing oil from the SPR and strong-arming our fellow IEA member states to ship refined products to us.  The problem, of course, is that you can only do this so long.  

N.O. as the central front in the war on terror?  You might think so based on the number of troops that are arriving and the talk of federal marshall law, but I won't go there.  ; )

This kind of warfare is using weaknesses in vital areas to attack an enemy while doing it without the necessity of complex military structure.

Isn't this called Fourth Generation Warfare?