When we were coming into Wilmington off of I-40 we saw a massive plume of smoke rise up into the air. Friends nearby said that they had heard a loud explosion of some sort. The cloud was very very black and the air smelled of burning plastic or chemicals. I am extremely surprised at how quickly officials have been able to gain control of this incident. There is hardly any smoke coming from that area now which shows how well all of the emergency departments are handling the situation!