If you google it I am sure you can read up on it, many lessons were learned. From the agent who removed his handgun and placed it on the car seat beside him, only to spend the entire engagement looking for it when it slipped away to the agent killed when he lost his glasses, and couldn't see the guy shooting at him. They had shotguns I think but no rifles. Obviously a long time ago, but the search for more effective calibre's and weapons followed.
I still have the after incident report somewhere. It actually makes sad reading. Pretty sure they made a movie about it, never saw it though.