I found this in the NOW newspaper:

"'Wings Over White Rock'
Don't miss being in White Rock on August 11, 2004 when the Canadian Forces Snowbirds will put on a magnificent 18-minute aerial display for CH.I.L.D. Children with Intestinal and Liver Disorders Foundation. Nine planes, flown by the renowned Snowbirds, will take to the skies over Semiahmoo Bay for this not to be missed event."

....probably be able to see some of the action from the track day at the Boundary Bay airport