Yet as UAV technology improves they are set to become an even more important part ofsecurity and military operations -- part of a system that gathers and relays information to other drones, ground control, manned aircraft and satellites.
The NYPD also maintains a "Ring of Steel, " a network of 4, 000 sophisticated security cameras that feed information into a central monitoring system to detect questionable or unlawful activity.
SELinux includes security enhancements to the operating system that can enforce the separation ofinformation based on the confidentiality and integrity requirements.
The White House review found the complex systemof maintaining multiple watch lists "is not broken, " but John Brennan, the deputy national security adviser who supervised the review, said the process of feeding information into the watch list system must be strengthened.