Homeland Security's warning is unjustified.
The Department of Homeland Security recently declared that American soldiers returning from Iraq and Afghanistan are at risk of becoming domestic terrorists. While no other free country believes that US military personnel are terrorists, Washington is keeping a close eye on them. The FBI recently launched an investigative program, along with the Department of Defense, called "Vigilant Eagle," to share information about Iraq and Afghanistan war vets who may have a propensity toward domestic terrorism.
The Homeland Security report is conspicuously light on evidence to back up its shocking claim. Lacking hard data, the report relies on words like "may," "potential," and "no specific information" to propel its argument. Its leading point seems to be that "skills and knowledge derived from military training and combat" somehow make vets likely to attack a country they risked their lives to defend.
So how does the report get from Point A to Point B? How does being a soldier put one on the path to becoming a domestic terrorist? The answer is clear and simple: It doesn't.