Pentagon redoing space defenses, but will Trump demand more?
Defense Secretary Jim Mattis attends a swearing in ceremony for Robert Wilkie as Secretary of the Department of Veterans Affairs in the Oval Office of the White House in Washington. President Donald Trump wants a Space Force, a new military service he says is needed to ensure American dominance in space. But the idea is falling flat at the Pentagon, where Mattis has said it would add burdensome bureaucracy and costs. (AP Photo/Andrew Harnik)