I looked at the DEA a few years ago. I'm guessing the aviation jobs at both agencies are somewhat similar. After talking to a good friend of mine who works for the DEA I decided to stick with the airlines. According to him the flying varies depending on which office you're out of but it's likely you'll do lots of survellience work. The idea of circling a house or car for hours in a C-182 just didn't sound that appealing to me. The DEA also requires you to work for 2 years as a SA before you can transfer to the air wing. I'm not sure if the FBI has the same requirement.