Tuesday is Veterans Day, a time to recognize those who have served in the armed forces.

The U.S. Census Bureau estimates there are more than 15 million vets in the country. Some face a different battle when they return home from combat, dealing with post-traumatic stress disorder.

Dr. Jennifer Perusini, a neuroscientist who specializes in PTSD treatment, joined "The Rush Hour" on Monday to discuss her research and talk about how to support those who are struggling.

Tap the video player above to watch the interview.

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