Embraer and the Brazilian Air Force (FAB) have partnered to study joint development of a light military transport with a hybrid-electric propulsion. system
Although market research has started to replace the USAF's E-4B NAOC fleet alone, the search continues for a single aircraft that could replace not only the NAOC but also U.S. Navy’s E-6B TACAMO fleet and the C-32A “Air Force Two” executive airlift fleet.