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Called the Content-Based Mobile Edge Networking (CBMEM) program, DARPA's effort is combining mobile ad-hoc networking with a peer-to-peer technology that replicates images, documents, and other media across a range of devices—without all of the overhead of the Department of Defense's existing intelligence-sharing network.The CBMEN software is in some ways like peer-to-peer file sharing software, except that it pushes content out to other devices on the network rather than simply serving up responses to download requests. Each device acts as a server, broadcasting availability of its content over Wi-Fi, cellular, or radio networks and then synchronizing with other CBMEN-equipped devices as they discover and join the network. As a result, all the content within the cloud of devices gets passed to each new member device without their users having to take any action.The test was performed using a scenario out of recent military history. Two squads were sent out on foot patrol in search of a "simulated person of interest." The first squad had identifying information on the suspect; as the squads came within communications range, that information was synchronized to the second squad's devices, which they were then able to use to identify and apprehend the target.DARPA has begun the second phase of the CBMEN test program, in which the agency wants to demonstrate it can provide “improved war-fighting mission support in a complex joint-content sharing environment”—allowing Army and Marine Corps units to share data across multiple types of networks, using additional commercial smartphones and military radios.