University of North Dakota officials will spend another day in the skies testing new technology designed to help integrate unmanned aircraft into the national airspace. UND Aerospace and the Mitre Corporation have been working on cockpit technology loaded with sense and avoid software – or algorithms. The goal is to develop a way for unmanned aircraft to avoid other aircraft and compensate for not having an actual pilot on board. Mark Askelson of UND's Atmospheric Sciences says the tests this week involve a Cirrus aircraft equipped with special algorithm software to act like an unmanned aircraft -- only with a “safety” pilot on board. A UND Cessna 172 will serve as an “intruder” aircraft during a demonstration project. The tests run through Saturday.