1.0Gizmodo Australiahttps://gizmodo.com.auGizmodo Internationalhttps://gizmodo.com.au/author/gizmodointernational/Monster Machines: This Buzz Saw Hangs From A Helicopter To Trim Trees From The Skyrich600338<blockquote class="wp-embedded-content" data-secret="J3uTiK1YhS"><a href="https://gizmodo.com.au/2014/06/monster-machines-this-buzz-saw-hangs-from-a-helicopter-to-trim-trees-from-the-sky/">Monster Machines: This Buzz Saw Hangs From A Helicopter To Trim Trees From The Sky</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://gizmodo.com.au/2014/06/monster-machines-this-buzz-saw-hangs-from-a-helicopter-to-trim-trees-from-the-sky/embed/#?secret=J3uTiK1YhS" width="600" height="338" title="“Monster Machines: This Buzz Saw Hangs From A Helicopter To Trim Trees From The Sky” — Gizmodo Australia" data-secret="J3uTiK1YhS" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script>
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In 2003, the inadvertent brush of a tree branch against power transmission lines set off a cascade of failures that within hours grew into the largest blackout in US history, affecting more than 50 million residents of the northeast United States and Canada. These flying buzz saws are here to ensure that never happens again.