Tango Group consisted of a squadron of five Gamma-class ATR-6 assault transports, and it served the Rebel Alliance. Their mission was to rescue a number of Bothans who held pro-Alliance sentiments. Due to these sentiments, the Galactic Empire planned to sell them into slavery. Following the disabling of the Sentinel-class landing craft KDT that was transporting the Bothans (the disabling was caused by Y-wings, one of which was flown by Ace Azzameen), the transports of Tango Group intervened, freed the enslaved Bothans, and transported them back to the Mon Calamari Star Cruiser Liberty.