DARPA SYSTEM F6 INFORMATION RESOURCE SHARING TECHNOLOGY (FIRST) ARCHITECTURE. THIS STATEMENT OF WORK (SOW) SETS FORTH THE EFFORT FOR DARPA SYSTEM F6 PROGRAM INFORMATION ARCHITECTURE TECHNICAL AREA. THIS TECHNICAL AREA 3 SEEKS THE DEVELOPMENT OF AN INFORMATION ARCHITECTURE TO FUNCTION AT LAYERS 3 THROUGH 7 ACROSS THE SPACE-BASED WIRELESS LINKS AND EXTENDING TO THE GROUND SEGMENT VIA A VARIETY OF DOWNLINK PATHS. THE INFORMATION ARCHITECTURE SUPPORTS DYNAMIC ROUTING OR SWITCHING, REAL-TIME RESOURCE SHARING AND SCHEDULING, FAULT TOLERANT BEHAVIORS, AND A MULTI-LEVEL INFORMATION ASSURANCE SOLUTION. DARPA BAA-11-01 FOCUSES ON THE DEFINITION OF INTERFACES AND THE DEVELOPMENT OF ALGORITHMS AND SOFTWARE WHICH WILL CONSTITUTE THE F6 DEVELOPER S KIT (FDK). THE FDK IS A SET OF OPEN SOURCE INTERFACE STANDARDS, PROTOCOLS, SOFTWARE, BEHAVIORS, AND REFERENCE IMPLEMENTATIONS THEREOF, NECESSARY FOR ANY PARTY, WITHOUT A CONTRACTUAL RELATIONSHIP WITH OR ASSISTANCE FROM ANY SYSTEM F6 PERFORMER, TO DEVELOP A CLEAN-SHEET MODULE DESIGN THAT CAN FULLY PARTICIPATE IN A FRACTIONATED CLUSTER.