With the largest crowds on the PGA Tour, the WM Phoenix Open is known as the place to see and be seen, part party and part sporting event. But with those massive crowds, how did it become a zero-waste event? First Alert Meteorologist Sean McLaughlin goes in depth with David Brannon, the Four Corners VP of the tournament’s title sponsor WM, the environmental solutions company that has turned the event into the "Greenest Show on Grass.”