Doug Steenland, president and chief executive officer of Nor

UNITED STATES - APRIL 24: Doug Steenland, president and chief executive officer of Northwest Airlines Corp., testifies at a House Judiciary subcommittee hearing on the proposed merger of Delta and Northwest Airlines in Washington, D.C., U.S., on Thursday, April 24, 2008Steenland and Richard Anderson, chief executive officer of Delta Airlines Inc., assured the committee that their merger to form the world's largest carrier would protect jobs, hubs and competition, as some lawmakers raised questions. (Photo by Stephanie Kuykendal/Bloomberg via Getty Images)