Responding to an urgent request for additional air power in Afghanistan, the Marine Corps is launching a new program to give its KC-130J Super Hercules aerial refueling tankers unprecedented combat punch -- a rapid-fire cannon, air-to-ground missiles and a sophisticated intelligence, surveillance and reconnaissance capability. The goal behind the previously unreported "Harvest Hawk" program -- focused on a KC-130J equipped with a modular package of capabilities that allow it to perform gunship-like missions as well as its traditional refueling and...