I had to Google "5th Wheel." I learned that it's an RV that hooks up to a truck, SUV or vehicle that can handle the weight.
Is the 5th Wheel you are talking about seen in this satellite shot from Google Maps? It is on the lower left side of my screen grabs, next to the last house shown in the grab (2019)?
If this is it, I think it belongs to a neighbor. In the Google Street Images taken on 2012 of the same area, those people in the last house have an ice cream van. Partially visible is a white extended cab truck.
I only just now traveled around in Google Street view and the satellite
view father away from KB's townhouse. Her home is not as rural as I thought. There are lots of businesses nearby and houses near her Somebody has to have a CCTV that shows the killer(s) approaching and leaving.
The Hwy is much closer than I thought.
I would encourage you to spend time looking around on Google Maps.
https://tinyurl.com/ybf97b57
You can see Memorial Park that LE searched. Now that I see
it on Google Maps, no one would hide a body in that little park
or its pond. It is too out in the open. But, maybe KB was asked to meet up with someone in the park. We just don't know at this point.