I actually considered looking into getting a gig like that. The certification process was not clear cut, at the time. I also looked into becoming a tower climber for cell phone companies. Same thing, with many certifying bodies, no standardization, whatsoever. I figured that the safety of those jobs was iffy, as long as there was no centralized licensing/certifying authority, as in my chosen profession. Even as is, my profession is one of the most dangerous in the US, with a far greater fatality rate than police and fire fighters.