With parts of the United States facing fuel shortages caused by Hurricane Katrina, Acting Deputy Defense Secretary Gordon England wants the U.S. military -- the nation's largest single petroleum consumer -- to hunt for ways to conserve. England has called for the military to take a number of steps to reduce fuel consumption, including deferring discretionary travel, maximizing use of aviation and ground combat simulators, and using mass transportation. "This situation is serious and our government needs the [Defense] Department's...