THE PROPOSED COOPERATIVE AGREEMENT SHALL BE FOR THE PURPOSE OF MAINTAINING THE EXISTING RESEARCH PARTNERSHIP BETWEEN THE NASA AMES RESEARCH CENTER (NASA/ARC) AND THE UAV COLLABORATIVE THAT WAS ESTABLISHED AS PER NASA COOPERATIVE AGREEMENT #NNX08AR57A EXECUTED ON 6/15/08 FOR A 4-YEAR PERIOD. THIS PROPOSED COOPERATIVE AGREEMENT SHALL REPRESENT A CONTINUATION OF RESEARCH ON UNMANNED AIRCRAFT SYSTEM (UAS) APPLICATIONS, DEMONSTRATIONS AND TECHNOLOGY DEVELOPMENT FOR AN ADDITIONAL 4-YEAR PERIOD FROM 5/15/2011 TO 5/14/2015. MEMBERS OF THE UAV COLLABORATIVE SHALL CONDUCT JOINT COOPERATIVE ACTIVITIES WITH NASA/ARC-AFFILIATED RESEARCH AND TECHNICAL STAFF. THESE ACTIVITIES SHALL RELATE TO THE LONG-TERM VISION OF NASA/ARC IN EXPERIMENTING WITH AND UPGRADING UAV-RELATED TECHNOLOGY FOR SCIENTIFIC, CIVILIAN AND COMMERCIAL APPLICATIONS. THE EMPHASIS SHALL BE ON MEDIUM TO SMALL UNMANNED AERIAL VEHICLES (UAVS) CONSIDERED IN THE FRAMEWORK OF OPTIMAL PERFORMANCE WITH MINIMAL RISK AT LOWER FLIGHT ELEVATIONS (