The FBI is helping several law enforcement agencies investigate over a dozen Apple Store robberies in states ranging from Connecticut to Virginia, Special Agent J.J. Klaver tells USA Today. Thefts from the retail chain have been on the increase in recent years, culminating Monday in a California incident which saw one robber killed by a security guard and two others arrested. "I used to do store openings with Apple, and they never used to have security guards," comments analyst Rob Enderle.