Passengers are asked to report three hours before departure. All El Al terminals around the world are closely monitored for security. There are plain-clothes agents and fully armed police or military personnel who patrol the premises for explosives, suspicious behavior, and other threats. Inside the terminal, passengers and their baggage are checked by a trained team. El Al security procedures require that all passengers be interviewed individually prior to boarding, allowing El Al staff to identify possible security threats. Passengers will be asked questions about where they are coming from, the reason for their trip, their job or occupation, and whether they have packed their bags themselves. The likelihood of potential terrorists remaining calm under such questioning is believed to be low (see microexpression).
At the check-in counter, passengers' passports and tickets are closely examined. A ticket without a sticker from the security checkers will not be accepted. At passport control passengers' names are checked against information from the FBI, Canadian Security Intelligence Service (CSIS), Scotland Yard, Shin Bet, and Interpol databases. Luggage is screened and sometimes hand searched. In addition, bags are put through a decompression chamber simulating pressures during flight that could trigger explosives. El Al is the only airline in the world that passes all luggage through such a chamber. Even at overseas airports, El Al security agents conduct all luggage searches personally, even if they are supervised by government or private security firms.