The USNAAA-cccg Theme Widget Areas
There are two widget areas, one directly below the left-side menu, the other is the right-hand column of the 3-column page template. Neither is visible in the full-width template.
WordPress comes with a selection of default widgets, six of which will pre-populate in the Left Hand Widget area. You can delete or add widgets into either left widget area or right widget area on the Appearance Widgets Screen.