How can I prevent my sister from going to Iraq?

She is not going to die, trust me. Chances are she will be safer there than here. Hollywood has fazed your thoughts to negativity about the "war on terror". Not all Iraqis ar hostile. Even Infantry Marines (like my bro who has been to Iraq twice) rarely die. However, if you really wanted to stop her you would either have to kill her, or hide her. If you hide her the military will find her eventually, and give her a dishonerable discharge. Shes going, trust me, but she will be safe.