Suicide rate among veterans 2X that of non-veterans

I'm not really surprised by this finding -- at least in terms of the ordinals -- but the cardinals are really quite startling:

Across the total US veteran population of 25 million, CBS found that suicide rates were more than twice as high as for non-veterans (according to the Centers for Disease Control and Prevention, suicide accounted for 32,439 deaths in 2004).

CBS spoke to the families of several veterans who killed themselves after returning from Iraq. "The war didn't end for him when he came home," said the mother of one soldier. "I think he was being tormented and tortured by his experiences."

I wonder how much of this is remorse at the fact that you really have to temporarily suspend your humanity to fight a war effectively at the person to person level.