Being a firefighter is very respectable but a difficult road. Many will go through EMT training and do other types of work while trying to get selected at a probie. Good advice from Jessica - do some research and look into volunteering.
If college isn't the path, which it isn't for everyone, although great to get your degree if you can. Skilled trades can be a great career path - mechanics, welding, electricians - it allows for a lot of options in terms of industry and career path.