ROBINS AIR FORCE BASE - To about 1,000 Warner Robins Air Logistics Center workers, the vision of the future includes 112 C-5 aircraft bristling with state-of-the-art guidance, navigation and communications systems, new engines and more than 70 modifications to the airframe and subcomponents. That possibility seemed more like a pipe dream a few years ago as airlift advocates called for mothballing at least 60 C-5s - the older "A" models - in favor of buying more C-17s, the newest of the Air Force transports. But the vision seems a little less murky today, although major hurdles remain before it becomes...