We're not going to sugar coat this: you can die on the job. In fact, 187 agents have died to date in the line of duty. And it's not just you; your entire family can be put at risk. Fortunately, though, while the risk of death threats is real, they aren't the norm.
Still, as long as ATF agents try to prevent criminals from committing crimes, there's going to be some risk associated with the job. Raids are dangerous. ATF agents never know how someone will respond to their property or business being searched. The training that an agent receives will help them stay as safe as possible, but nothing works one hundred percent of the time. Not to put any undue pressure on you, but if there's any way you could be Chuck Norris...that would be advantageous.