IGF::OT::IGF OTHER FUNCTIONS THE OBJECTIVE OF THIS EFFORT IS TO DEVELOP A SINGLE DEGREE OF FREEDOM COMPOSITE STORABLE TUBULAR EXTENSIBLE MEMBER (STEM) ARM FOR SPACE SITUATIONAL AWARENESS AND OSCILLATION DAMPING APPLICATIONS. DARPA'S PHOENIX PROGRAM AIMS TO CHANGE HOW SATELLITES ARE BUILT, SHIFTING TO ON-ORBIT ASSEMBLY TO UPGRADE SATELLITES TO INCORPORATE NEW ELECTRONICS AND NEW TECHNOLOGIES. THIS APPROACH INCREASES THE EFFECTIVE US GOVERNMENT RETURN ON INVESTMENT BY RE-USING HIGHEST VALUE COMPONENTS ON ORBIT, AND ALLOWS NON-TRADITIONAL SPACE SUPPLIERS TO ENTER GEO USING HIGH VOLUME LOW COST MANUFACTURING THROUGH DISPENSED COTS HOSTED PAYLOAD DELIVERY. BY ENABLING "ASSEMBLY IN SPACE," DARPA AND NASA CAN MORE COST-EFFECTIVELY BUILD VERY LARGE APERTURES FOR BOTH RF AND OPTICAL SYSTEMS.