Because of the size of these fires, I didn't give it much thought and figured that they were close to burning themselves out.
A couple of hours later I was at the pool and I stood up and saw that there was smoke and flames all over the place in the marshes.
I also noticed that there were a couple of vehicles from NC Forest Service parked at the boat ramp that is next to our pool.
As it turns out, the initial fire was started by fireworks and that this fire turned into a controlled burn.
Below are some photos and video of the fire: