I went back to working on my armored truck model today. I had built the chassis and was separating the parts of the body when my computer began bogging down. I saved everything and restarted the computer, however, when I tried to reopen the model to resume working on it a popup informed m that the file format is not supported.
I tried opening a few other files and they worked correctly, it was just the armored truck file that was corrupted. So, I am back to literal square one as I open a new Blender file and start from scratch on my armored truck build today.