There was the first mass shooting atrocity about two weeks later when Charles Joseph Whitman went into the tower at the University of Texas, Austin, and shot about twenty people before an officer killed him. Spec and Whitman seem to have started the whole mass murder thing.
I was just East of Memphis when they captured Speck there. I got sent home to Texas just South of Austin just in time to watch Whitman on live TV shooting from the Tower. Music was good that Summer but events in the US were pretty scary.