"You're going to see this more and more over the next 10 years," said Shad Meshad, founder of the National Veterans Foundation, who has been working with veterans since 1970. "... There's a percentage that come back, depending on how much trauma and how much killing they're involved in, they're going to act out."
http://www.cnn.com/2012/01/17/us/vet...html?hpt=hp_c2