And there lies the problem tourist, as you say they have to be stamped on every now and then. However if it was a SNCO, the stamping may not be quite as easy to administer, and the said SNCO may be able to get his point across. The idea is that NCA can be heard and not just seen. We are an integral part of a crew and our opinions need to be heard and NOT stamped on just because an officer disagrees.