So you honestly think that there could be an invasion of IRAQI force's? wow calm down GI JOE. Think about it, their terrorist. Their main objective isn't going to be a full on frontal attack on american soil. It will be hit and skip tactics to make the public scared, which worked on 911. They'll bomb a train station or airport or some other public area that will make people go into hiding and afraid to go about their daily lives. Your talking about an all out demolishment of national, state, and local government with no source of defence and/or relief from any said governments.
Yes if a natural disaster and/or terrorist attack does occur it's understandable that we as citizen's should be prepared to take care of ourselves for at least 72 hours. Personally i think it's BS, i'd like to take care of myself for a hell of alot longer than that with no help or dependency on any government aid.
If you truly want to live out your war fantasy's, join the army.