The ArcGIS Solutions Geoprocessing Toolbox is a set of models, scripts, and tools for use in ArcGIS Desktop. These tools provide specialized processing, workflows, and analysis for defense, intelligence, emergency management, and other solutions domains.
This August 2018 release of the solutions-geoprocessing-toolbox repository works with ArcGIS for Desktop 10.3.1 and ArcGIS Pro 2.0.