How do they get close enough to throw FOD into the engine?!? Even on flights where I’ve been on the ramp, we were kept

How do they get close enough to throw FOD into the engine?!? Even on flights where I've been on the ramp, we were kept well clear of all the critical bits http://www.channelnewsasia.com/news/asiapacific/elderly-passenger-tosses-coins-into-plane-s-engine-grounding-9329292

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