Some hardcore guys base jumping in wingsuits (also known as squirrel suits or birdman suits).<br /><br /><br /><img src="http://ll.broadbandsports.com/images/14787_thumb.jpg" alt=" Extreme Base Jumping in Wingsuits" title=" Extreme Base Jumping in Wingsuits" width="150" height="90" alt=" Extreme Base Jumping in Wingsuits"/>
