How many times do you think you've ever seen or heard a security guard say 'don't worry about it?"Acted on the customers' concerns, no question.
I say that based on the following:
1: I don't know what the exact security protocols were that evening, but I'm reminded of airports, where rules to keep in mind are to never leave baggage unattended, and to not make any jokes about carrying items, because security guards are obliged to act on these kinds of things, no matter how small the chance. I don't imagine that the area was as highly secured as an airport, but this was 2017, and Europe wasn't exactly running short of terrorist attacks round then.
2: I work with security guards on a regular basis, and even in the scope of my own position, if a customer expresses unease about something, I'm obliged to go and check it out. Sometimes it's nothing, other times it's serious (serious enough to even call the police in). But I can't simply say "don't worry about it." Fear of being called something, or intentionally harassing someone, or being anything else, isn't pleasant, but I can't not do my job based on what I find pleasant and not.
What does 'check it out' mean to you?
How many terrorist were running around in Europe in 2017?