An article that I read a few days ago reported that he was changing magazines after firing only 10 or 15 rounds. The speculation at the time was that he "learned" this from video games.
Also, regarding ear plugs, a couple of weeks ago, Jan. 5-7, it was reported on several networks that police were baffled as to "why he would wear earplugs" if he was planning to kill himself.
I was baffled as to why several articles seemed to be written explicitly to release that information. It didn't seem so strange, to me, for a person planning to go shoot indoors, especially an autistic kid, who was almost certainly taught to use ear protection when shooting.
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