As the Defense Department tries to convince Congress to raise budget caps and return to regular order, the Pentagon has begun briefing lawmakers in detail about how the U.S. military's upper hand over potential enemies is slipping away, according to a top general. Speaking Monday at the National Press Club in Washington, Chairman of the Joint Chiefs of Staff Gen. Joseph Dunford said his "greatest concern" is maintaining the U.S. military's competitive advantage and ability to project power around the...