The development of power and propulsion technologies for future unmanned aircraft systems will deliver more reach, lethality and protection for the Army's modernization efforts -- all issues that are center stage for a group of researchers from the Army's corporate research laboratory and its partners across academia and industry at a recent University of Illinois at Chicago event. The MQ-1C Gray Eagle Unmanned Aircraft System addresses the need for a long-endurance, armed, unmanned aircraft system that offers greater range, altitude and payload flexibility over earlier systems.