Correct. The brain tumor made sense. There wasn’t any clamor for outlawing guns after the mass murder.
Civilians with guns were instrumental in limiting the killing.
After the first few minutes, Whitman had to keep his head down because of the fire being directed at the top of the tower. This also contributed to the on-duty police officer, the off-duty police officer and the civilian’s ability to take him out.
The civilian asked to be field deputized which happened. It was CYA for him.
First responders with waepons to return fire, the most effective of suppression.