I’d bet your son kept the headphones in his pocket after that. Situational awareness is important. I’m glad he is okay.
Told his mother today to speak with both of the kids, that when they are on the street they must pay attention, and to put all items in the inside pockets.
Yes, he was lucky, he said they weren’t too big but there were 3 of them, I told him just give them your stuff if it ever happens.