How about airport security?

When you conduct a security check at the airport, you must obtain a security certificate.

Airport security inspection refers to a personal and baggage inspection item that passengers on civil aircraft must accept before boarding, and it is also a necessary measure to ensure the safety of passengers and the flight safety of civil aircraft in the air. (This sentence is taken from Baidu Encyclopedia) At present, the airport recruitment security check is generally directly recruited from colleges and universities with related majors (internship for one year first, then signing the contract after graduation, and some airports will not sign it after internship), and a small part is social recruitment (need to be related).