General Atomics Aeronautical Systems announced Tuesday it is teaming up with South Korean firm Hanwha Aerospace to develop and produce a short-takeoff-and-landing version of the Gray Eagle drone . The two firms signed the partnership agreement Tuesday, General Atomics said, and will work together to design and build a production-representative version of the drone. General Atomics said it has already flown a self-funded prototype, which the company said shows it can quickly move from