Just drop a few hundred of these on their asses! http://www.youtube.com/watch?v=Hho-3VY6GSM

Seriously, its cheaper than a ground war .

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My much loved machines...
1990 E32 BMW 735i - Daley Driver
1983 Okuma LB15 Twin Turret NC turning center - Money Maker!
1985 Suzuki Sierra - Off-road thrasher and mobile shooting platform
1981 HMT NH26 20HP 30" Gap Bed Engine Lathe - Money Maker!
1966 Lancia Flavia 1800 Coupe - Weekend toy
1941 South Bend 9" Model C Workshop Lathe - Antique restoration project.