SOW ENTITLED, EXPLORE THE FEASIBILITY OF LINKING A SET OF VARIABLE FIDELITY AND SYSTEM SCOPE, AIRSPACE MODELING AND SIMULATION TOOLS. THE PRIMARY OBJECTIVE OF THIS RESEARCH ACTIVITY IS TO INITIATE THE DEVELOPMENT OF AN INTEGRATED MODELING AND SIMULATION CAPABILITY THAT WILL ALLOW DESIGNERS OF THE NEXT GENERATION AIR TRANSPORTATION SYSTEM (NEXTGEN) TO ASSESS LARGE SCALE, SYSTEM-LEVEL IMPACTS OF PROPOSED AIR TRAFFIC MANAGEMENT (ATM) CONCEPT ELEMENTS OF THE NEXT GEN AIRSPACE PROJECT. THE INITIAL SET OF SUPPORTING OBJECTIVES CONSISTS OF THE FOLLOWING: (1) IDENTIFY OPPORTUNITIES TO LINK EXISTING, STAND-ALONE TOOLS AS A MEANS OF CREATING A COMBINED, EXTENDED CAPABILITY. (2) ASSESS THE FEASIBILITY OF INTEGRATING MULTIPLE, STAND-ALONE MODELING AND SIMULATION TOOLS WITH OTHERS IN THE NASA ATM TOOL SUITE. (3) INTEGRATE THE TOOLS USING APPROPRIATE MIDDLEWARE TECHNIQUES.