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Across 1. It is very important that those without an airport ID card or boarding card are not allowed in these parts of an airport. 4. This type of threat is easy to make but difficult to carry out. 7. It is very dangerous if a passenger is allowed to be this when airside. 9. These may be destroyed if found by security staff in an airport. 10. Any items or implements that can be used to cause harm.

Down 2. This group of things is not allowed in baggage or on ones person. 3. Errors contained within this may pose a security risk. 5. These may cause injury airside if you are not paying attention. 6. These cannot be taken through security unless in bottles containing a maximum of 100ml. 8. This threat is favoured by terrorists.