My father was a firefighter for 20+ years (retired a few years back, made it to Captain), and I almost regret not following in his footsteps. It'd be the perfect job for a freelance web developer. 24 hours on, 48 hours off, most of those 24 hours are sitting around the station, so I imagine I could code a good portion of those, not to mention on the other days off.

Plus great retirement.