Errors in geography
- crossing a bridge that does not look like any bridge in Geneva;
- none of main street for cars are paved in Geneva;
- none of the advertisement in Geneva are made in tubular display panel (the one you see written Elizabeth ad).
Incorrectly regarded as goofs
However, military contractors are often overseas for much of their careers, and have a habit of referring to the US as "the States". Since both these characters have been contractors for years, they both would most likely have become adjusted to saying this, and not "the mainland", which is mainly a local Hawaiian saying.