In just two days, the eyes of the world will be focused squarely on London, as Prince William and Catherine Middleton tie the knot at Westminster Abbey.  Billions of people will savor every moment, from the instant Kate steps out of her hotel to the big nuptial kiss on the balcony of Buckinham Palace.  And CNN will be bringing you every moment of the historic event.  Supervising Producer Alec Miran gives us a look inside the broadcast facility across from the Palace, to preview just some of what you'll see on Friday.