The United States operates hundreds of military bases around the world. It's a form of colonialism that is expanding under the Bush Administration's post-9/11 doctrine of pre-emptive war. Supporting a far-flung military empire generates large profits for many US-based corporations. It's terrific for weapons manufacturers like Lockheed Martin and Northrop Grumman and for support contractors like Halliburton. Increasingly, many people worldwide are angry with having to live with Uncle Sam in uniform in their backyard.