The Reaver airborne assault whose troop transports Florin's soldiers later captured.
Referenced in passing as Carl explained why the party took ground transport: Florin's soldiers had captured a Reaver airship, one of the troop transports used for the paratroopers. Nobody dared fly it while Calliope still circled above The Reaver Castle, so the captured Reaver Troop Transport Airship sat unused and the convoy crossed The Ash Plains on the ground instead.
The prior airborne assault whose surviving transports became crawler salvage.