My brother recounted a funny story to me once (he files for a well known LC outfit). They wear hi-viz if they are operating crew, but they can be positioning as passenger in full uniform with no requirement for hi viz.
On of their captains alighted from the steps without high-viz, and within milliseconds a security vehicle appeared from over the horizon and made a bee line for him. The security guy jumps out and declares " Captain, may I ask if you are passenger or crew". The pilot looks at him sheepishly and replies "what's the right answer".