We see all the evidence because we have an observer. The minister appoints an observer for all major TSB investigations. As soon as the TSB goes to the site of an accident to start an investigation, we appoint an observer to make sure whatever deficiencies found during the investigation are relayed to the minister through us, so we can act immediately to make any safety corrections needed.
For instance, if an investigator of the TSB found that some gizmo on a train was defective and could affect the whole fleet, we would need to know because we would have to contact all of the operators of that same thing. In the case of aviation, we might need to issue a directive to the whole industry. So that's why we have an observer.
I don't think we can use all of that investigation for enforcement. There's some of it we cannot use, and that's why we have a separate investigation.