One of the Army's top futurists said last week that officials pondering the service's "deep future" want to realign science and technology efforts to explore the acquisition of a lighter tank in preparation for the day when the budgets for big-ticket modernization are reactivated. Lt. Gen. Keith Walker, director of the Army Capabilities Integration Center, said that in the world of 2030 the service would need mobile protected firepower that could be rapidly deployed to areas of conflict. "We think...