My boyfriend works fire & rescue right now, he is going to fire school right now for more training and all tha?

Yes, it can work. I have been a firefighter for 10 years and have known many couples like you two that have made it. Marriage is full of ups and downs of all kinds, its about picking someone you want to go through the hard times with. It won't always be easy but if you love each other, it will always be worth it.