Travelers wait to board an Amtrak train at Union Station in Washington, D.C., U.S., on Wednesday, Nov. 21, 2012. U.S. travel during the Thanksgiving holiday weekend will rise a fourth straight year, gaining 0.7 percent from 2011, as trips by automobile rise even as airplane trips decline, AAA said last week. Photographer: Andrew Harrer/Bloomberg
{"Image ImageDescription": "Travelers wait to board an Amtrak train at Union Station in Washington, D.C., U.S., on Wednesday, Nov. 21, 2012. U.S. travel during the Thanksgiving holiday weekend will rise a fourth straight year, gaining 0.7 percent from 2011, as trips by automobile rise even as airplane trips decline, AAA said last week. Photographer: Andrew Harrer/Bloomberg", "Image Copyright": "2012 Bloomberg"}