article_snippet.sent: It's dangerous, but it's what we do," said Olvera, who has a daughter and twin 11-year-old boys.
article_snippet.sent: It's risk versus gain.
article_snippet.sent: To save a human life, we will risk almost everything.
article_snippet.sent: It feels good to be able to help out.
article_snippet.sent: CNN's Sugam Pokharel contributed to this report.