Lockheed Martin today revealed an independent research and development effort to increase the ammunition capacity of the Air Force and Navy variants of the F-35 Joint Strike Fighter. Currently, the fifth-generation aircraft is capable of carrying two AIM-120 Advanced Medium-Range Air-to-Air Missiles in each of its two weapon bays. The upgrade, dubbed Sidekick, would allow the F-35A and C variants to carry three missiles in each bay for a total of six, Tony “Brick” Wilson, a Lockheed F-35 test pilot,...