"An unemployed motorcycle mechanic who gunned down airport screening officers at Los Angeles International Airport in a 2013 attack that sent passengers running for their lives pleaded guilty Tuesday to murder and 10 other charges.... He was armed with a Smith & Wesson semiautomatic rifle he had purchased seven months earlier. Officers found a handwritten note and ammunition in a duffel bag Ciancia had dropped. Ciancia, who was living in the Los Angeles area after growing up in Pennsville, N.J., said in the note that he wanted to kill at least one TSA officer but hoped to kill more. "If you want to play that game where you pretend that every American is a terrorist, you're going to learn what a self-fulfilling prophecy is," his note said, according to court documents. The note added, "I want to instill fear in your traitorous minds. I want it to always be in the back of your head just how easy it is to take a weapon to the beginning of your Nazi checkpoints.""