Senate proponents of a key Air Force and Marine Corps aircraft program are pressing Pentagon leaders to extend procurement plans for the C-130J and KC-130J aircraft beyond 2008. In a letter aimed at influencing internal Defense Department deliberations on the shape of the military's new six-year spending plan, a bipartisan group of 14 lawmakers ask outgoing Defense Secretary Donald Rumsfeld to explain future modernization plans for the tactical air mobility fleet. "We are concerned that the current Department of Defense...