calling your brains last ditch effort to try pulls them in a person observing someone going through agnel breathing it's common or it would be possible that they would misinterpret that as actual breathing effective or yes they can be used like it is with real ratings that's what we teach this is not affective. right so an officer is dealing with someone who's experiencing agonal breathing it would potentially be possible for an officer to misinterpret reading for effect to breathe. and in certain circumstances where there's a lot of noise or a lot of commotion would it be more likely that that could happen yes. now you were shown this slide in terms of when do we stop c.p.r. and one of the reasons you stop performing c.p.r. is because it's not safe right. and by being not safe are you referring to the process of actually giving c.p.r. or the environment that you would be doing it it would be the environment around you. and so it stands to reason that if the environment around you you determine to be not safe you may not start it right away. reasonable yes. now you also testified that you