After the Blast: Stephen Kinney, a U.S. National Guard sergeant, survived a roadside blast while serving in Iraq in 2004. After he returned home, his mild traumatic brain injury went undiagnosed for months. Credit: Christopher Churchill

In honor of Veterans Day, TR is highlighting a piece on blast-related brain trauma in Iraq, which originally ran in the May 2008 issue. The piece interweaves the stories of two National Guard sergeants who withstood separate blasts while fighting in Iraq in 2004 and the scientists racing to understand the often invisible wounds that resulted.

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