duty/non-duty travel
When I worked for FR some years ago I frequently used free travel in uniform both to travel to work and otherwise, including travelling to destinations for job-seeking opportunities. As a perk it was very beneficial and the discomfort of lying with them either in flight deck or cabin was inconsequential. But on one occasion I was arrested and nearly spent a night in a cell because as positioning crew one was allowed to pass through security etc without a boarding pass, but if deadheading then one of these was required. And I didn't have one, nor was operations control aware that this was a requirement! So when Mr Plod gently fingered my collar I was suddenly on the wromng side of the law!