Kind of.. When I was.younger I fell through some ice on a pond, went completely under and.couldn't find the way back to the hole I fell through.. pretty sure I was at the limits of holding my breath before finding someones hand reaching in.
A few years ago at work, was demolishing a concrete balcony.. I moved from where I was stood for a few seconds, 10 seconds later, 4 ton of concrete came crashing down where I was just stood.
Have you ever helped a stranger who had been injured (outside of the parameters of work, if you are an emergency responder etc)