A Sleeping Archive of Upward Falling Robots that Hide on the Seafloor for Years and Launch on Demand

The Defense Advanced Research Projects Agency, or DARPA, is hoping to implement a global infrastructure for storing mission-critical objects and payloads at the "bottom of the sea"—a kind of stationary, underwater FedEx that will release mission-critical packages for rendezvous with passing U.S. warships and UAVs.