My late father-in-law did that after getting out of the Navy and worked his way up to Battalion Chief. He had a large family and was able to spend his free time with his wife and kids. He also built homes on the side.I’ve worked for a county fire and emergency department for over 13 years. We work 24 hours, then get 48 hours off. Plenty of time for family and/or a part time job or overtime.