Quick question.. I was flying a few months ago with the family, one of our boarding cards got a beep at the gate and the agent muttered something like 'high priority' but waved us through no problem

The other week flying out of Zurich I was sat almost behind the gates, and could see the screen the gate people see (which was pretty interesting in itself) but I also noticed there 3 passengers also had something like 'high priority message' or words to that effect next to their names

Just wondered if anyone knew what it was about?