It is still a long run until DARPA autopilot system will fly military jets on its own, but latest demonstration proves that it’s operational.
Aurora Flight Sciences, aviation company developing “aviation brains” for the agency, successfully tested it on a Cessna Caravan turboprop aircraft.

Aircrew Labor In-Cockpit Automation System (ALIAS) consists of a robotic arm and a tablet user interface featuring speech recognition.

DARPA autopilot

More:

• Autonomous DARPA drone navigates at 72 km/h (45 mph) indoor
• Jargon update – DARPA Gremlin Drones

P.S. It’s pretty impressive how fast Google catches on: after only 8 minutes I posted this

Google search result on “DARPA autopilot cessna”