Defense Secretary Donald Rumsfeld came into office vowing to transform the way the U.S. military fights wars. The promise implied a shift in spending away from old weapons development programs and towards new programs to develop more nimble, high-tech equipment. But a year and a half into the job, Rumsfeld has managed to cancel only one old weapons program, the Crusader cannon. And Congress may yet over rule him on that. NPR's Steve Inskeep has the story.