Physical Danger
You may be working for a government agency, but it's not that kind of government agency. We're talking the Environmental Protection Agency. Or the U.S. Department of Agriculture. If anything is in danger here, it's the environment, so you can stop wearing all black and talking into a hidden earpiece. No one's shooting at you.
That said, if you're really paranoid about danger and bad with gore, don't take a job in the biomedical engineering sphere. Every so often, biomedical engineers come into contact with devices that need to be cleaned of blood. Otherwise, you're working for General Mills and testing different kinds of sustainable grain and cereal production. Oh, the things you've seen. How ever do you stay so safe?