I was a Brooklyn Bethelite during this time and I can assure you, they locked the doors and instructed us to not let anyone in behind us that we did not recognize. They provided additional "security" at all entrances to double-check ID's.
We were told to not even go out to our meetings (no subway, so it would have been tough anyway). I do know that they donated (or loaned) construction equipment to aid with efforts, but there was NO major movement to send people to the area affected to provide real help. And we were specifically told not to go ourselves, that our work at bethel was more important.
The food and water being passed out was not to victims, but to police and firefighters who were coming across the bridge.
And of course it was whispered around bethel that an event like this could set off the start of hte great tribulation. puke.