Lightning was a Delta-class DX-9 transport utilized by the Rebel Alliance throughout the duration of the Galactic Civil War.
In order to bring an end to Operation Strike Fear by taking out its command ship, the Imperial-class Star Destroyer Invincible, General Crix Madine and a group of Sullustan technicians devised a plan that involved the Lightning. It was sent out to capture several technicians from Cygnus Corp while they were conducting tests on their new spacecraft, the Alpha-class Xg-1 Star Wing.
Keyan Farlander together with Sunnar Jan-lo located the transport carrying the Cygnus personnel and subsequently engaged Imperial fighters in combat while the Lightning executed a boarding maneuver.
Subsequently, the Cygnus engineers were 'persuaded' into helping the Alliance destroy the Invincible by modifying a Lambda-class T-4a shuttle to deliver a captured warhead onto the Star Destroyer.
The Lightning also played a supporting role in the seizure of Imperial Overlord Ghorin's Y-wings during Operation Grain Snatch.