Darren Spitz was a Los Angeles city official in the Department of Transportation, responsible for analyzing and managing traffic patterns. To aid his escape after assassinating Martin Webb, Zapata hired six people to cause car accidents at key points on the city's freeways and surface streets, resulting in a total standstill throughout the L.A. area. The accident sites included the 405 at the Sepulveda Pass, the 101 at Cahuenga, and the 10 just before the 110. Befuddled, Spitz saw on his computer that there were SigAlerts at these locations, and thought to himself that they were ideal locations to choose if someone wanted to deliberately jam the freeways. He then called his supervisor at the city planner's office. (Chaos Theory)