When I arrived at the REC Centre yesterday morning to prepare for “Snooze Button” I was surprised to see a group of youngsters exercising on the lawn. As they were mostly dressed in black I assumed that they were Ninjas-in-training. They must have been a pretty advanced class - their young years notwithstanding - as a few minutes later they had completely disappeared. I figure that only advanced students would have this ability. I should have taken another picture to prove that they were invisible but it didn’t occur to me at the time.