Fans of “Survivor” or “Fear Factor” may feel squeamish when they watch contestants take part in gross stunts, but the show wouldn’t make people do it if they weren’t sure it was safe, right? The network lawyers wouldn’t have it, so this is where gross stunt testers enter the picture. Stunt work isn’t always steady work, but one day’s work can pay big. A union member can make $800 in a day — more if the stunt is considered dangerous. If she gets sick or an unforeseen danger is discovered, the show scraps the idea. So the next time a television show contestant gets locked in a morgue drawer with cockroaches, eats an African cave dwelling spider, or bathes in cow’s blood, think about the person who got to go to first before the cameras started rolling.