Free Republic

This is one helicopter that really is a chopper. Dangling 90 feet below this McDonnell Douglas 500's whirling rotor blades, attached to it by a flexible metal pipe, is a caged engine driving 11 whirring rotary blades, a giant flying tree trimmer. They call it the Aerial Saw. It's a weapon of mass destruction in the battle against trees that encroach on power lines, pipelines, railroads and other rights of way.