Generally, engineers have the right to admit or not admit persons on their head-end. It is customary to ask the engineer can you ride with them up front, even if your qualifying with a head-end pass. With Silverliners, engineers have to deal with uninvited guests all the time via the parlor door window, and at times it can be a nuisance. Now for the case of what happened to Clearfield, I can understand the actions of the crewmembers, even though they may have seemed to be a bit excessive. Most of the time it is better to communicate with the conductor of the train about your intentions BEFORE taking actions, even with a permit. Generally, most of them will just say 'whatever' and you can go about your business, especially with a permit. I seriously doubt that there will be, or has been, punitive actions taken against the crew because of the incident; the conductor has general charge of the train of which he is assigned. Jfrey states that the person, who Clearfield says was him, was instructed by the conductor TWICE to refrain from his actions and yet he obviously persisted. It's almost like passengers who board the train fully aware that they don't have a ticket, trailpass, or cash money to pay their fare, yet are shocked when the conductor is dismayed by their 'I forgot my pass' story. Talk to the conductor before you board. Generally, they will carry you anyway. Honesty is the best policy. You have to understand that Engineers and Conductors fall under considerable company scrutiny on any railroad, and we never know what peoples' intentions truly are. Conductors are being watched all the time, but they don't get DECERTIFIED, as do locomotive engineers, from anything as a result.
Even with a Head-End pass, unless it is a FRA official, a police officer, supervisor or RRD ops person performing their company duties (with a head end pass in tow), or just observing my operating rules compliance, or any other official RRD employee thereof, I am not obligated to allow entry onto the head-end of a train I am operating. The Head-end pass grants authority to ride the HEAD-END or the HIND-END end of a train. The engineer, or the conductor, could easily say, "qualify from the rear", although I generally welcome the company up front. Please respect an individual crew member, particularly the conductor or engineer, when they ask that you not photo/film anything through the parlor door window into the head end, and don't take anything personal from their request.