Spare a thought for the poor security staff please. These people are paid next to nothing have minimal training or even experience of aviation, they are only doing the things they are told to do. Try to remember that many of them loose their jobs on a regular basis because of so called infringements by people posing as passengers or aircrew while trying to get past security carrying prohibited items. They dont know if you are a real pilot who needs to file his nails on the way across the pond or just some smart dick from the Dept for Transport trying to catch them out.