75 There is no doubt that there is an entitlement to claim damages where a person witnessed a person being killed, injured or put in peril in the course of the incident. Thus, if a passenger saw a fellow passenger being pinned under a falling stanchion that crushed the train, the first mentioned passenger is a person who "witnessed, at the scene, the victim being ... injured or put in peril". If the stanchion was knocked loose in the collision and then fell during the rescue process, killing or injuring passengers, or putting them in peril, then a rescuer who saw the stanchion crushing or pinning persons underneath and who suffered mental harm as a result, would, arguably at least, fall within s 30(2)(a). In that situation, "being" would be satisfied, as would the causal connection with the negligent act or omission whereby the derailment occurred. To that extent, there would be substance in the appellants' argument that an accident extends beyond the time when the impact occurs.