This applies mostly to Space-set content where the body goes through significant harm and deadly trauma when sucked into the vacuum of space but can apply to drownings, claustrophobic environments or violence (which many are particularly sensitive to post the death of George Floyd). Not only that but these situations can be scary for children to watch, the suddenness of many situations where they occur can frighten adults and all viewers should be able to go into a movie aware of what they could see.