HOMELAND SECURITY: Excerpts of Navy Yard report: 160 cameras and no one watching. “A private security guard was in an office with monitors showing the feeds from 160 security cameras while the shootings occurred. Those cameras, police now know, covered almost every inch of Building 197 and were documenting in real time every move by gunman Aaron Alexis. But the guard locked the door, hid and notified no one that he was there with access to the information.”