you see downed power lines, complete and utter destruction there, that could present more danger if you re restoring electricity to an area in which you have water in a home, that could cause more damage all around. talk to us about that. reporter: let s talk first about the electrical restoration. the crews set up grids and work through the grid. if there s an area where people are not going to be living, then they re certainly not going to be restoring the electricity there. it takes a long time to rebuild an electrical system after a hurricane like this. one of the biggest concerns, of course, is people go out and get generators. they turn the generators on and back the less trisity through the system into their house using the generator. the electrical company has to make sure before they turn the electricity on that those generators are disconnected because the back feed from the