You didn't say the person infront was a pilot but that aside, it is a DFT requirement that all hats are removed whether your staff or passenger.
I think you will find we have to have the same security clearance.
oh, swatters, r u for real ??? anyone who is based there knows what is being said, i,m sure no one is silly enough to 'explain it' to you !!!!!
Still not answered the question!!!!!!