U.S. troops from the 2nd Battalion, 87th Infantry Regiment patrol at dawn in Kandalay, Afghanistan on Aug. 4, 2011. A worldwide stand down for troops to take part in suicide prevention training Thursday is part of the Army's response to an alarming suicide rate of nearly one per day. Romeo Gacad/AFP/Getty Images hide caption

itoggle caption Romeo Gacad/AFP/Getty Images

Andy Tranfaglia, 23, who has Fragile X syndrome, rides a horse with his mother, Katie Clapp. Katie Clapp hide caption

itoggle caption Katie Clapp

To get security clearance for jobs in the military or the government, applicants must say whether they've undergone counseling in recent years. Some experts say this question — known as Question 21 — is discouraging people from applying for jobs or from getting help. Chris Hondros/Getty Images hide caption

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Members of the military listen to President Obama during his visit to Fort Bliss, Texas, on Friday. Pablo Martinez Monsivais/AP hide caption

itoggle caption Pablo Martinez Monsivais/AP

The term "Peeping Tom" comes from the story of Lady Godiva, who rode through town naked on horseback and asked residents not to look. iStockphoto.com hide caption

itoggle caption iStockphoto.com

A PET scan of the brain of a person with Alzheimer's disease. U.S. National Institute on Aging/Wikimedia Commons hide caption

itoggle caption U.S. National Institute on Aging/Wikimedia Commons

Dr. Amit Etkin and a research assistant help a participant into the bore of the MRI. Courtesy of the Etkin Lab at Stanford University hide caption

itoggle caption Courtesy of the Etkin Lab at Stanford University