Storm chaser snaps his holy grail: a double tornado

He calls it his unicorn. Last week, Texas storm chaser Kelly DeLay captured the image he's been trying to get for six years: a double tornado. 

DeLay was on the plains of Colorado when he spotted it. 

He tells As It Happens co-host Carol Off he was setting up to take a picture of a single tornado emerging from a massive super-cell storm when he saw the rare event.

"The storm was probably a mile, mile and a half wide...As I was beginning to take pictures the second tornado came down and I was just absolutely delighted."