he had 2 9mm handguns, he could easily conceal those in a knapsack and just walk across the campus after the first shooting, to setup the 2nd rampage. so the police couldn’t easily identify him.
Maybe, but student witnesses say they saw an armed Asian enter Norris Hall with either clips or “bandoliers”. Either way, somehow this guy evaded police detection for more than an hour.
That seems suspect, and easily leads one to conclude a second shooter.