Can't say how I know but post Katrina when they were trying move people out of NOLA, they were throwing them on jets. Word had gotten around that most of NOLA was headed to Houston so that became THE place to go. A few of the plane loads went into revolt when it was announced that they were headed for any other city so the powers that be in DHS lied to every planeload that their destination was Houston until they were in the air. Then and only then was their real destination announced. The instant that they set foot upon that "free govmint airplane ride" they gave up control of their own life.
Quick side note: A Discovery channel show "Colony" from a few years back put a group of strangers together in a staged biological disaster. The scenario was that the govt sent this group to a place that was to be stocked with all of the basics. Of course it has next to nothing. This is shocking departure from most Discovery shows in that that show the colonists that the govt cannot help them when TSHTF. Yet at near the end of experiment when the colonists have fashioned a functioning way of life with what they have "the fake FEDS" send a car in with room for only two colonists to be moved to a "facility" that is supposedly decent. Only one black lady out of about ten remaining colonists would go with the FEDS. The others had seen the light and elected to stay with what they had built with their own hands.
Oh and BTW it is amazing that building is still in use. I was sure that it would need a good nuking after what went on in there.