While it’s great that nobody was injured, I’m not sure an apology would’ve worked if someone did. Pilots, ground workers and pretty much everybody in the aviation industry knows how much damage FOD can do to an aircraft. A rock could’ve been sucked into the engine and that would be too costly to replace. I’m pretty sure none of these kids are expert mechanics or have a large amount of money lying around. I understand that humans can do bad things, but this is just unacceptable. Not to say they are 5, but all of them are teenagers. They should know what a rock can do to a plane! I’m not saying they deserve jail time, but some punishment has to be in order.
Also, they could’ve ruined the already delicate bond between airports and spotters. Airports have cracked down on their rules, and after 9/11, we are even lucky to be able to point anything at a moving aircraft. This is just shameful, and a complete embarrassment to spotting.