Unfortunately we're a small country. But do consider this...
Have you ever once, just once in your important lives, stopped and thanked a soldier, medical staff, fire fighter, public servant, from doing what they do to keep you safe?
Have you ever considered why Singapore is so safe? At any one point, there's a least a bird up there, circling and vigilant. Its because of our very defense posture that makes others think twice about being funny with us. The crews face a hazardous job, it would be unbecoming and graceless for us allow them to face our contempt at the slightest inconvenience.
think you are right. likely no one ever have done that.