I ran into a guy at Home Depot today and struck up a conversation due to his SAC veteran ballcap, we talked about Aircraft! He was stationed (Intel) at SAC Omaha and related a story when the RCAF flew their last 5 Avro Vulcan bombers out of SAC during an annual airshow, not sure of the date. He said the 5 of them did somewhat of an airshow for a while flying in formation. Then, they broke off and one screamed off on its own doing a roll! I do need to verify the story, but pretty cool.