dd, we were both right. Check out the ABC News article on this:
http://www.abcnews.go.com/US/HurricaneKatrina/story?id=1123495&page=1
After the NG truck became stuck, a USCG helicopter was summoned. They wasted time while Jefferson declined to board the helicopter (twice). I'm just speculating, but I think he didn't want to be separated from the stuff he rescued from his house. Hmmmm.