The FBI released surveillance video of Aaron Alexis who killed 12 people at the Washington Navy Yard on September 16. According to an FBI spokesperson, Alexis was under the "delusional belief that he was being controlled or influenced by electro-magnetic waves." (CNN)
David Pescovitz is Boing Boing's co-editor/managing partner. He's also a research director at Institute for the Future. On Instagram, he's @pesco.