This is a tough question. It's difficult for me to put myself exactly in that position because I wouldn't have been there at that time. I would have been several hundred miles inland, simply because as Katrina approached, it was apparent it wasn't going to be pretty. I have a bug out plan for a number of events. As it applies to your question, part of the plan is for the evacuation of all my firearms (at least if I ever get any more afterI lost them all in a tragic boating accident :X)
That doesn't help those that cannot leave because they don't have the means, or are elderly, etc. I think if I find myself in that position, I will plan on hiding firearms I intend to keep. Proper preparation and burial is one good method, unless the area is flooded.
It's tough and I feel for the old lady in particular that was beaten up by the goons with badges. Carma should visit them promptly.
So, what do you think? If you were in their shoes whatwould you do?
As a LEO, what do you do with those orders?