Even before Katrina, the New Orleans Police Department was world-famous for corruption and incompetence.
The NYPD is probably the finest municipal police force in the world. When 911 hit, they ran towards the disaster, not away from it.
If there's looting after a hurricane in NYC, it won't be tolerated for very long.
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And the 42ID of the NYNG has been front line domestically and in Iraq. In any event I can guarantee that my block would be safe as church.