Old Dogs gives ideas and enemies for FIST agents that have somehow survived a few too many times.
The layout is crisp, and fits the FIST aesthetic perfectly, complete with even more acronyms. The vibe of all the content is spot on, conjuring up images of grizzled veterens in action films. I'm such a sucker for a 'one last job' trope, and you can bet your cotton socks that this includes it.
This feels very useful as inspiration for referees to create their own, or adapt existing, missions for long-in-the-tooth player characters.