Witnesses testified on the efficiency of federal property use.   Panel Two: The Honorable Danny Werfel, Controller, Office of Management and Budget The Honorable Robert A. Peck, Commissioner, Public Buildings Service, U.S. General Services Administration The Honorable James M. Sullivan, Director, Office of Asset Enterprise Management, U.S. Department of Veteran Affairs Mr. Brian Lepore, Director, Defense Capabilities and Management, U.S. Government Accountability Office Mr. David Wise, Director, Physical Infrastructure Issues, U.S. Government Accountability Office