This story takes place in the 9th pass with Lessa and F’lar as the Weyrleaders of Benden Weyr. It follows immediately on one of her other books, “Renegades of Pern” I think, where the AIVIS (Artificial Intelligence Voice Address System).
This story occasionally makes me think of the 60’s and 70’s in the US. There is the “Apollo” program that promises to get rid of Thread. There is the civil unrest because of changing circumstances, new “Aivis” devices in this case. There are the repeated attacks on important figures like Lord Jaxom and Masterharper Robinton.
All in all an enjoyable and epic story.