Within my WIP, there are FBI agents. When talking about the president, the P isn't capitalized normally unless followed by his name. The president vs. President Jackson. Where I'm getting jammed up is in the situations below.
1. At one point, I describe a guy as looking "Federal." Cap F or not? I initially chose not, but my wife says yes.
2. The protagonist refers to the guys as "Feds." Cap F or not?
3. The FBI agent character refers to the "Bureau" here and there. I assume the B is capitalized?