The tape was wiped in front of the crew at the end of the debrief in front of the crew.
You just made maggot's point - the
implication of
McGoonagall's post was that the tape would be
kept beyond the debrief, for possible review. How would the data be stored, for how long, what circumstance would it be reviewed and by whom? This is a pandora's box that very few would want to see opened on both sides, management and union as it could have large unintended consequences and enormous legal ramifications.
This is separate to the use of video strictly as a training tool and wiped at the completion of the session, which is still in use today.