&gt; &quot;This incident happened, and then they&#x27;ve made a film and they all come out as heroes,&quot; he says. &quot;But these two people should never have died in the first place.&quot;<p>What should the divers have done to avoid this? Were they just not experienced enough for a dive of this magnitude? One mentions they should have done a practice run, but what does that mean? How do you practice for a dive?