An influential Pentagon advisory board is revisiting ways the Defense Department -- the nation's largest single fuel consumer -- might insulate itself from fuel-price volatility. Specifically, the Defense Business Board will review whether the military should utilize contractual instruments available in commodity markets and used by commercial concerns, including airline and transportation companies, to try to stabilize fuel costs. On Jan. 7, the chairman of the Defense Business Board, Michael Bayer, directed the formation of a new task force to...