(CNN) -- The air in and around New Orleans is electrified with anticipation -- and anxiety. Louisiana National Guard members arrive at the New Orleans convention center during preparations for Gustav. Nervous is how Merrick Matherne says he is feeling. Nervous and stressed at the prospect of having to survive and rebuild in the wake of another hurricane. As Friday's third anniversary of Katrina's landfall passed, the Crescent City found itself potentially in the cross hairs of another destructive storm, Hurricane Gustav. Residents are suspended in a wait-and-see mode, with an evacuation order for New Orleans likely to come sometime after Saturday, according to Mayor Ray Nagin.
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Katrina survivors face more stress with new looming hurricane
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Study: New Orleans' post-traumatic stress disorder rate is more than 25 percent
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City's mental health services haven't recovered from Katrina losses
As for Matherne, he says he and his wife are dealing with the specter of @placeholder with humor, mostly for the sake of his eldest daughter, now 9, who is anxious about losing her friends and her toys all over again.