Kevin McAleenan, U.S. Customs and Border Protection Commissioner; Air Force Gen. Terrence J. O'Shaughnessy, commander of North American Aerospace Defense Command and U.S. Northern Command; and Kenneth P. Rapuano, assistant secretary of defense for homeland defense and global security, host a joint press conference on the Defense Department deployment to the Southwest border at the Ronald Reagan Building in Washington, Oct. 29, 2018.