I'm sure this was discussed before, but I couldn't find it:
If you fail one of three tests, you only need to re-take one, right?
Also, if you pass the Civil PE, and fail the rest, can you get reciprocity with another state?
Unfortunately, you need to be licensed in one state before you can be licensed in another, regardless of the test requirements. However, you will also need the required professional experience for the State you wish to seek license (e.g. most States require 4 years). In CA, you have to pass 3 tests, but only need 2 years engineering experience to be a PE. Once you have a CA PE and want to get your PE elsewhere, you have to have additional years of engineering work experience to qualify, if that other state requires it.