Here's a couple of article excerpts on the Superdome's conversion to hurricane shelter, underscoring what's been suggested before on the forum: if you show up at a refugee/evacuation center, expect that you will be "relieved" of some/all of your PSK/BOB.
"People were told to bring enough food, water, and medicine to last up to five days. One man lamented that his cigarettes and lighter were taken."
"Armed National Guardsmen searched everyone and their bags. They seized guns, knives, drugs."
"Guardsmen made able-bodied people clasp their hands behind their backs while they patted them down, feeling the seams and hems of clothing, then ran metal detectors over them. The backpacks, suitcases and plastic grocery bags that held their belongings were searched. A homeless woman wearing shorts and a T-shirt...was searched for almost 10 minutes."
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"Things that have never happened before happen all the time." — Scott Sagan, The Limits of Safety