Travellers are seen inside of Union Station on July 1, 2016, ahead of the Independence Day holiday weekend, in Washington, DC. / AFP / Mandel Ngan
{"Image ImageDescription": "Travellers are seen inside of Union Station on July 1, 2016, ahead of the Independence Day holiday weekend, in Washington, DC. / AFP / Mandel Ngan        (Photo credit should read MANDEL NGAN/AFP via Getty Images)"}