Fire service

What if I die while working as a firefighter and leave behind my family. I haven't actually started working yet. I still haven't graduated high school yet. I still have 2 months but once I do get certified in August and do begin working what if I get injured or I die. I love the idea of being a firefighter and the family I'll have in that field. I'm just scared of the dangers included in working as a firefighter helping others.