Transforming joint training in the Defense Department is a continual journey, Paul W. Mayberry, deputy undersecretary of defense for readiness, said at the Defense Transformation Efforts and Opportunities Conference here last week. "We are a nation at war," he said. "Because of our successes in these theaters, some have questioned the need to transform, but in fact it is the conditions from these wars that have only reinforced our necessity to transform the way that we train. "Today's world is complex and filled with uncertainty and surprise," he added. "We no longer fight against known enemies with standing armies, but...