Larry Wolf
How about Major Nidal Hassan and Army Specialist Ivan Lopez?

Fort Hood shooter Ivan Lopez had mental problems, saw no combat in Iraq'

Hasan was to be deployed to Afghanistan, contrary to earlier reports that he was to go to Iraq, on November 28. Prior to the incident, Hasan told a local store owner that he was stressed about his imminent deployment to Afghanistan since he might have to fight or kill fellow Muslims. According to Jeff Sadoski, spokesperson of U.S. Senator Kay Bailey Hutchison, "Hasan was upset about his deployment"