Mr. Atwater is very humble about his career as a Bronco.  I liked his comment about the Christian Okoye hit as "it could have easily gone the other way."

After watching the video in this article, the Okoye hit looks like it would be called helmet-to-helmet if it was in a 2017 NFL game.  The helmet hit could have concussed Okoye and he may have blacked out for a half second or more.  That is why he crumpled.  Well, that was nearly 30 years ago and there was no penalty for helmet-to-helmet back then.