So, being a little behind in my reading, I finally got to this one just yesterday...
It's mostly set-up, and others have covered many of the observations/feelings I had, but here's one thing I personally enjoyed:
Cait calls Janine "Aunt J" in one scene. Cait's RGB counterpart Victor does the same thing in my stories. I'm assuming it's a coincidence, but I enjoyed it.
The ATC crew were interesting, though...man, Kevin Beckman comes across as not just slow on the uptake, but a little bit...I dunno, mentally unbalanced or something. Maybe an aftereffect of being possessed by Rowan. Good grief, if he and Egon are both acting deranged...wait, this could get interesting...