Here’s a thought, if you work for a police agency that specializes in air travel, don’t test your screeners by using real explosives planted on unwitting tourists. The Slovakian air police did just this and one of the eight explosives was not detected and the poor Irish tourist was arrested near the end of his journey. It wasn’t until three days later that the Slovak police got in touch with their Irish counterparts and told them to let the man out of jail.