CST-blue group
CST-blue group consisted of a quartet of Lambda-class T-4a shuttles that belonged to the Rebel forces stationed at the Deep Space Manufacturing Facility Organarms sometime in the time leading up to the Battle of Endor.
The destruction of these shuttles occurred during their movement from the station, where they were presumably constructed, according to scanner data that identified a shipment of "shuttles," to Utility Tugs for the purpose of transporting containers.