GENI, the Global Environment for Network Innovations, is a national facility that supports exploration of radical designs for a future global networking infrastructure. It is a research network/testbed that is geographically distributed, contains diverse devices including wireless, supports many simultaneous experimenters, and allows end-users to use and exploit those experimental protocols. ProtoGENI is an NSF-funded and GPO-funded prototype implementation and deployment of GENI, led by the Flux research group at the University of Utah, and largely based on our Emulab software. ProtoGENI is the Control Framework for GENI Cluster C, the largest set of integrated projects in GENI.