AIR & SPACE MAGAZINE The Great Waldo Canyon Fire The U.S. Air Force Academy is only one location threatened by the worst blaze in Colorado history. USAF/Carol Lawrence June 29, 2012 An ominous cloud of smoke from the Waldo Canyon Fire rises from the south behind the Air Force Academy's Cadet Chapel as cadets head for a briefing on evacuation procedures June 27, 2012. The Academy evacuated more than 600 families and 110 dormitory residents from the base the evening of June 27. (U.S. Air Force photo/Carol Lawrence) Carol Lawrence Get the latest stories in your inbox every weekday.