Nanaimo is located beneath several international flight routes and contrails are visible most of the time. Today there was an unusual one though. One jet deviated from its normally straight flight path to pull a 360+. According to Flightaware.com it was a Seattle-bound Alaska Airlines 737 and its exact path was recorded. Not sure what the purpose was, but this must have been a tight, high-G turn for the passengers. Nice clear day for sightseeing over Vancouver Island I guess.