I will second the motion. My career was filled with acronyms, and it even got to the absurdity that a single acronym would stand for over a dozen separate meanings. So the etiquette is to unwrap the acronym the first time it is used, if it is used more than once (and not to use it, except parenthetically, if it is used only once).

Here's the point: In communication, you do everything possible to make it clear to the reader. Or why the hell are you bothering to communicate?