I believe this model was the one used by the CDC before it was pulled. It's a simulator that one can play around with comparing states actions or different strategies for the nation. It produces disastrous results for states that reduce current mitigation strategies.
It's from Harvard, GA Tech, Mass Gen and some others. Not pretty if one follows Jared getting close to normal in June and then take off in July - this would bring over 400K deaths by end of August