More progress!
The lower wall still needs the caps, pillars, and return wall at each end. That will be a planting area for native plants. A couple courses of the upper wall will be covered by the dirt after they fill the planting area.
Hemoglobin was high enough. Got the electrocardiogram of the inside of my heart. It determines if I can get a "watchman" installed and I can. A watchman prevents most blood clots to the brain.